feat: support trigger drop (#248)

* feat: add trigger-drop proto

* remove trigger id of DropTriggerExpr

c++/greptime/v1/ddl.pb.cc

@@ -708,9 +708,24 @@ struct WebhookOptionsDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 WebhookOptionsDefaultTypeInternal _WebhookOptions_default_instance_;
+PROTOBUF_CONSTEXPR DropTriggerExpr::DropTriggerExpr(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.catalog_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
+  , /*decltype(_impl_.trigger_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
+  , /*decltype(_impl_.drop_if_exists_)*/false
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct DropTriggerExprDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR DropTriggerExprDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~DropTriggerExprDefaultTypeInternal() {}
+  union {
+    DropTriggerExpr _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DropTriggerExprDefaultTypeInternal _DropTriggerExpr_default_instance_;
 }  // namespace v1
 }  // namespace greptime
-static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fddl_2eproto[47];
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fddl_2eproto[48];
 static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fddl_2eproto[4];
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fddl_2eproto = nullptr;
 
@@ -1171,6 +1186,15 @@ const uint32_t TableStruct_greptime_2fv1_2fddl_2eproto::offsets[] PROTOBUF_SECTI
   ~0u,  // no _inlined_string_donated_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::WebhookOptions, _impl_.url_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::WebhookOptions, _impl_.opts_),
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropTriggerExpr, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropTriggerExpr, _impl_.catalog_name_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropTriggerExpr, _impl_.trigger_name_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropTriggerExpr, _impl_.drop_if_exists_),
 };
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
   { 0, -1, -1, sizeof(::greptime::v1::DdlRequest)},
@@ -1220,6 +1244,7 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
   { 429, -1, -1, sizeof(::greptime::v1::NotifyChannel)},
   { 438, 446, -1, sizeof(::greptime::v1::WebhookOptions_OptsEntry_DoNotUse)},
   { 448, -1, -1, sizeof(::greptime::v1::WebhookOptions)},
+  { 456, -1, -1, sizeof(::greptime::v1::DropTriggerExpr)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -1270,6 +1295,7 @@ static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::_NotifyChannel_default_instance_._instance,
   &::greptime::v1::_WebhookOptions_OptsEntry_DoNotUse_default_instance_._instance,
   &::greptime::v1::_WebhookOptions_default_instance_._instance,
+  &::greptime::v1::_DropTriggerExpr_default_instance_._instance,
 };
 
 const char descriptor_table_protodef_greptime_2fv1_2fddl_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
@@ -1425,21 +1451,23 @@ const char descriptor_table_protodef_greptime_2fv1_2fddl_2eproto[] PROTOBUF_SECT
   "annel_type\"\177\n\016WebhookOptions\022\013\n\003url\030\001 \001("
   "\t\0223\n\004opts\030\002 \003(\0132%.greptime.v1.WebhookOpt"
   "ions.OptsEntry\032+\n\tOptsEntry\022\013\n\003key\030\001 \001(\t"
-  "\022\r\n\005value\030\002 \001(\t:\0028\001*$\n\010Analyzer\022\013\n\007ENGLI"
+  "\022\r\n\005value\030\002 \001(\t:\0028\001\"U\n\017DropTriggerExpr\022\024"
-  "SH\020\000\022\013\n\007CHINESE\020\001*)\n\017FulltextBackend\022\013\n\007"
+  "\n\014catalog_name\030\001 \001(\t\022\024\n\014trigger_name\030\002 \001"
-  "TANTIVY\020\000\022\t\n\005BLOOM\020\001*%\n\021SkippingIndexTyp"
+  "(\t\022\026\n\016drop_if_exists\030\003 \001(\010*$\n\010Analyzer\022\013"
-  "e\022\020\n\014BLOOM_FILTER\020\000BL\n\016io.greptime.v1B\003D"
+  "\n\007ENGLISH\020\000\022\013\n\007CHINESE\020\001*)\n\017FulltextBack"
-  "dlZ5github.com/GreptimeTeam/greptime-pro"
+  "end\022\013\n\007TANTIVY\020\000\022\t\n\005BLOOM\020\001*%\n\021SkippingI"
-  "to/go/greptime/v1b\006proto3"
+  "ndexType\022\020\n\014BLOOM_FILTER\020\000BL\n\016io.greptim"
+  "e.v1B\003DdlZ5github.com/GreptimeTeam/grept"
+  "ime-proto/go/greptime/v1b\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fddl_2eproto_deps[1] = {
   &::descriptor_table_greptime_2fv1_2fcommon_2eproto,
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fddl_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fddl_2eproto = {
-    false, false, 6305, descriptor_table_protodef_greptime_2fv1_2fddl_2eproto,
+    false, false, 6392, descriptor_table_protodef_greptime_2fv1_2fddl_2eproto,
     "greptime/v1/ddl.proto",
-    &descriptor_table_greptime_2fv1_2fddl_2eproto_once, descriptor_table_greptime_2fv1_2fddl_2eproto_deps, 1, 47,
+    &descriptor_table_greptime_2fv1_2fddl_2eproto_once, descriptor_table_greptime_2fv1_2fddl_2eproto_deps, 1, 48,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fddl_2eproto::offsets,
     file_level_metadata_greptime_2fv1_2fddl_2eproto, file_level_enum_descriptors_greptime_2fv1_2fddl_2eproto,
     file_level_service_descriptors_greptime_2fv1_2fddl_2eproto,
@@ -14755,6 +14783,286 @@ void WebhookOptions::InternalSwap(WebhookOptions* other) {
       file_level_metadata_greptime_2fv1_2fddl_2eproto[46]);
 }
 
+// ===================================================================
+
+class DropTriggerExpr::_Internal {
+ public:
+};
+
+DropTriggerExpr::DropTriggerExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.DropTriggerExpr)
+}
+DropTriggerExpr::DropTriggerExpr(const DropTriggerExpr& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  DropTriggerExpr* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.catalog_name_){}
+    , decltype(_impl_.trigger_name_){}
+    , decltype(_impl_.drop_if_exists_){}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  _impl_.catalog_name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.catalog_name_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_catalog_name().empty()) {
+    _this->_impl_.catalog_name_.Set(from._internal_catalog_name(), 
+      _this->GetArenaForAllocation());
+  }
+  _impl_.trigger_name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.trigger_name_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_trigger_name().empty()) {
+    _this->_impl_.trigger_name_.Set(from._internal_trigger_name(), 
+      _this->GetArenaForAllocation());
+  }
+  _this->_impl_.drop_if_exists_ = from._impl_.drop_if_exists_;
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.DropTriggerExpr)
+}
+
+inline void DropTriggerExpr::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.catalog_name_){}
+    , decltype(_impl_.trigger_name_){}
+    , decltype(_impl_.drop_if_exists_){false}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+  _impl_.catalog_name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.catalog_name_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.trigger_name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.trigger_name_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+
+DropTriggerExpr::~DropTriggerExpr() {
+  // @@protoc_insertion_point(destructor:greptime.v1.DropTriggerExpr)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void DropTriggerExpr::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.catalog_name_.Destroy();
+  _impl_.trigger_name_.Destroy();
+}
+
+void DropTriggerExpr::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void DropTriggerExpr::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.DropTriggerExpr)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.catalog_name_.ClearToEmpty();
+  _impl_.trigger_name_.ClearToEmpty();
+  _impl_.drop_if_exists_ = false;
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* DropTriggerExpr::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // string catalog_name = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          auto str = _internal_mutable_catalog_name();
+          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
+          CHK_(ptr);
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.DropTriggerExpr.catalog_name"));
+        } else
+          goto handle_unusual;
+        continue;
+      // string trigger_name = 2;
+      case 2:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 18)) {
+          auto str = _internal_mutable_trigger_name();
+          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
+          CHK_(ptr);
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.DropTriggerExpr.trigger_name"));
+        } else
+          goto handle_unusual;
+        continue;
+      // bool drop_if_exists = 3;
+      case 3:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 24)) {
+          _impl_.drop_if_exists_ = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* DropTriggerExpr::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.DropTriggerExpr)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // string catalog_name = 1;
+  if (!this->_internal_catalog_name().empty()) {
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
+      this->_internal_catalog_name().data(), static_cast<int>(this->_internal_catalog_name().length()),
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
+      "greptime.v1.DropTriggerExpr.catalog_name");
+    target = stream->WriteStringMaybeAliased(
+        1, this->_internal_catalog_name(), target);
+  }
+
+  // string trigger_name = 2;
+  if (!this->_internal_trigger_name().empty()) {
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
+      this->_internal_trigger_name().data(), static_cast<int>(this->_internal_trigger_name().length()),
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
+      "greptime.v1.DropTriggerExpr.trigger_name");
+    target = stream->WriteStringMaybeAliased(
+        2, this->_internal_trigger_name(), target);
+  }
+
+  // bool drop_if_exists = 3;
+  if (this->_internal_drop_if_exists() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteBoolToArray(3, this->_internal_drop_if_exists(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.DropTriggerExpr)
+  return target;
+}
+
+size_t DropTriggerExpr::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.DropTriggerExpr)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string catalog_name = 1;
+  if (!this->_internal_catalog_name().empty()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::StringSize(
+        this->_internal_catalog_name());
+  }
+
+  // string trigger_name = 2;
+  if (!this->_internal_trigger_name().empty()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::StringSize(
+        this->_internal_trigger_name());
+  }
+
+  // bool drop_if_exists = 3;
+  if (this->_internal_drop_if_exists() != 0) {
+    total_size += 1 + 1;
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData DropTriggerExpr::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    DropTriggerExpr::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*DropTriggerExpr::GetClassData() const { return &_class_data_; }
+
+
+void DropTriggerExpr::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<DropTriggerExpr*>(&to_msg);
+  auto& from = static_cast<const DropTriggerExpr&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.DropTriggerExpr)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_catalog_name().empty()) {
+    _this->_internal_set_catalog_name(from._internal_catalog_name());
+  }
+  if (!from._internal_trigger_name().empty()) {
+    _this->_internal_set_trigger_name(from._internal_trigger_name());
+  }
+  if (from._internal_drop_if_exists() != 0) {
+    _this->_internal_set_drop_if_exists(from._internal_drop_if_exists());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void DropTriggerExpr::CopyFrom(const DropTriggerExpr& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.DropTriggerExpr)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool DropTriggerExpr::IsInitialized() const {
+  return true;
+}
+
+void DropTriggerExpr::InternalSwap(DropTriggerExpr* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
+      &_impl_.catalog_name_, lhs_arena,
+      &other->_impl_.catalog_name_, rhs_arena
+  );
+  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
+      &_impl_.trigger_name_, lhs_arena,
+      &other->_impl_.trigger_name_, rhs_arena
+  );
+  swap(_impl_.drop_if_exists_, other->_impl_.drop_if_exists_);
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata DropTriggerExpr::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fddl_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fddl_2eproto[47]);
+}
+
 // @@protoc_insertion_point(namespace_scope)
 }  // namespace v1
 }  // namespace greptime
@@ -14947,6 +15255,10 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::WebhookOptions*
 Arena::CreateMaybeMessage< ::greptime::v1::WebhookOptions >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::WebhookOptions >(arena);
 }
+template<> PROTOBUF_NOINLINE ::greptime::v1::DropTriggerExpr*
+Arena::CreateMaybeMessage< ::greptime::v1::DropTriggerExpr >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::DropTriggerExpr >(arena);
+}
 PROTOBUF_NAMESPACE_CLOSE
 
 // @@protoc_insertion_point(global_scope)

c++/greptime/v1/ddl.pb.h

@@ -123,6 +123,9 @@ extern DropFlowExprDefaultTypeInternal _DropFlowExpr_default_instance_;
 class DropTableExpr;
 struct DropTableExprDefaultTypeInternal;
 extern DropTableExprDefaultTypeInternal _DropTableExpr_default_instance_;
+class DropTriggerExpr;
+struct DropTriggerExprDefaultTypeInternal;
+extern DropTriggerExprDefaultTypeInternal _DropTriggerExpr_default_instance_;
 class DropViewExpr;
 struct DropViewExprDefaultTypeInternal;
 extern DropViewExprDefaultTypeInternal _DropViewExpr_default_instance_;
@@ -219,6 +222,7 @@ template<> ::greptime::v1::DropDefault* Arena::CreateMaybeMessage<::greptime::v1
 template<> ::greptime::v1::DropDefaults* Arena::CreateMaybeMessage<::greptime::v1::DropDefaults>(Arena*);
 template<> ::greptime::v1::DropFlowExpr* Arena::CreateMaybeMessage<::greptime::v1::DropFlowExpr>(Arena*);
 template<> ::greptime::v1::DropTableExpr* Arena::CreateMaybeMessage<::greptime::v1::DropTableExpr>(Arena*);
+template<> ::greptime::v1::DropTriggerExpr* Arena::CreateMaybeMessage<::greptime::v1::DropTriggerExpr>(Arena*);
 template<> ::greptime::v1::DropViewExpr* Arena::CreateMaybeMessage<::greptime::v1::DropViewExpr>(Arena*);
 template<> ::greptime::v1::FlowId* Arena::CreateMaybeMessage<::greptime::v1::FlowId>(Arena*);
 template<> ::greptime::v1::ModifyColumnType* Arena::CreateMaybeMessage<::greptime::v1::ModifyColumnType>(Arena*);
@@ -8782,6 +8786,186 @@ class WebhookOptions final :
   union { Impl_ _impl_; };
   friend struct ::TableStruct_greptime_2fv1_2fddl_2eproto;
 };
+// -------------------------------------------------------------------
+
+class DropTriggerExpr final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.DropTriggerExpr) */ {
+ public:
+  inline DropTriggerExpr() : DropTriggerExpr(nullptr) {}
+  ~DropTriggerExpr() override;
+  explicit PROTOBUF_CONSTEXPR DropTriggerExpr(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  DropTriggerExpr(const DropTriggerExpr& from);
+  DropTriggerExpr(DropTriggerExpr&& from) noexcept
+    : DropTriggerExpr() {
+    *this = ::std::move(from);
+  }
+
+  inline DropTriggerExpr& operator=(const DropTriggerExpr& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline DropTriggerExpr& operator=(DropTriggerExpr&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const DropTriggerExpr& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const DropTriggerExpr* internal_default_instance() {
+    return reinterpret_cast<const DropTriggerExpr*>(
+               &_DropTriggerExpr_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    47;
+
+  friend void swap(DropTriggerExpr& a, DropTriggerExpr& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(DropTriggerExpr* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(DropTriggerExpr* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  DropTriggerExpr* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<DropTriggerExpr>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const DropTriggerExpr& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const DropTriggerExpr& from) {
+    DropTriggerExpr::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(DropTriggerExpr* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.DropTriggerExpr";
+  }
+  protected:
+  explicit DropTriggerExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kCatalogNameFieldNumber = 1,
+    kTriggerNameFieldNumber = 2,
+    kDropIfExistsFieldNumber = 3,
+  };
+  // string catalog_name = 1;
+  void clear_catalog_name();
+  const std::string& catalog_name() const;
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_catalog_name(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_catalog_name();
+  PROTOBUF_NODISCARD std::string* release_catalog_name();
+  void set_allocated_catalog_name(std::string* catalog_name);
+  private:
+  const std::string& _internal_catalog_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_catalog_name(const std::string& value);
+  std::string* _internal_mutable_catalog_name();
+  public:
+
+  // string trigger_name = 2;
+  void clear_trigger_name();
+  const std::string& trigger_name() const;
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_trigger_name(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_trigger_name();
+  PROTOBUF_NODISCARD std::string* release_trigger_name();
+  void set_allocated_trigger_name(std::string* trigger_name);
+  private:
+  const std::string& _internal_trigger_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_trigger_name(const std::string& value);
+  std::string* _internal_mutable_trigger_name();
+  public:
+
+  // bool drop_if_exists = 3;
+  void clear_drop_if_exists();
+  bool drop_if_exists() const;
+  void set_drop_if_exists(bool value);
+  private:
+  bool _internal_drop_if_exists() const;
+  void _internal_set_drop_if_exists(bool value);
+  public:
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.DropTriggerExpr)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr catalog_name_;
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr trigger_name_;
+    bool drop_if_exists_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fddl_2eproto;
+};
 // ===================================================================
 
 
@@ -16429,6 +16613,130 @@ WebhookOptions::mutable_opts() {
   return _internal_mutable_opts();
 }
 
+// -------------------------------------------------------------------
+
+// DropTriggerExpr
+
+// string catalog_name = 1;
+inline void DropTriggerExpr::clear_catalog_name() {
+  _impl_.catalog_name_.ClearToEmpty();
+}
+inline const std::string& DropTriggerExpr::catalog_name() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.DropTriggerExpr.catalog_name)
+  return _internal_catalog_name();
+}
+template <typename ArgT0, typename... ArgT>
+inline PROTOBUF_ALWAYS_INLINE
+void DropTriggerExpr::set_catalog_name(ArgT0&& arg0, ArgT... args) {
+ 
+ _impl_.catalog_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:greptime.v1.DropTriggerExpr.catalog_name)
+}
+inline std::string* DropTriggerExpr::mutable_catalog_name() {
+  std::string* _s = _internal_mutable_catalog_name();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.DropTriggerExpr.catalog_name)
+  return _s;
+}
+inline const std::string& DropTriggerExpr::_internal_catalog_name() const {
+  return _impl_.catalog_name_.Get();
+}
+inline void DropTriggerExpr::_internal_set_catalog_name(const std::string& value) {
+  
+  _impl_.catalog_name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* DropTriggerExpr::_internal_mutable_catalog_name() {
+  
+  return _impl_.catalog_name_.Mutable(GetArenaForAllocation());
+}
+inline std::string* DropTriggerExpr::release_catalog_name() {
+  // @@protoc_insertion_point(field_release:greptime.v1.DropTriggerExpr.catalog_name)
+  return _impl_.catalog_name_.Release();
+}
+inline void DropTriggerExpr::set_allocated_catalog_name(std::string* catalog_name) {
+  if (catalog_name != nullptr) {
+    
+  } else {
+    
+  }
+  _impl_.catalog_name_.SetAllocated(catalog_name, GetArenaForAllocation());
+#ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (_impl_.catalog_name_.IsDefault()) {
+    _impl_.catalog_name_.Set("", GetArenaForAllocation());
+  }
+#endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DropTriggerExpr.catalog_name)
+}
+
+// string trigger_name = 2;
+inline void DropTriggerExpr::clear_trigger_name() {
+  _impl_.trigger_name_.ClearToEmpty();
+}
+inline const std::string& DropTriggerExpr::trigger_name() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.DropTriggerExpr.trigger_name)
+  return _internal_trigger_name();
+}
+template <typename ArgT0, typename... ArgT>
+inline PROTOBUF_ALWAYS_INLINE
+void DropTriggerExpr::set_trigger_name(ArgT0&& arg0, ArgT... args) {
+ 
+ _impl_.trigger_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:greptime.v1.DropTriggerExpr.trigger_name)
+}
+inline std::string* DropTriggerExpr::mutable_trigger_name() {
+  std::string* _s = _internal_mutable_trigger_name();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.DropTriggerExpr.trigger_name)
+  return _s;
+}
+inline const std::string& DropTriggerExpr::_internal_trigger_name() const {
+  return _impl_.trigger_name_.Get();
+}
+inline void DropTriggerExpr::_internal_set_trigger_name(const std::string& value) {
+  
+  _impl_.trigger_name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* DropTriggerExpr::_internal_mutable_trigger_name() {
+  
+  return _impl_.trigger_name_.Mutable(GetArenaForAllocation());
+}
+inline std::string* DropTriggerExpr::release_trigger_name() {
+  // @@protoc_insertion_point(field_release:greptime.v1.DropTriggerExpr.trigger_name)
+  return _impl_.trigger_name_.Release();
+}
+inline void DropTriggerExpr::set_allocated_trigger_name(std::string* trigger_name) {
+  if (trigger_name != nullptr) {
+    
+  } else {
+    
+  }
+  _impl_.trigger_name_.SetAllocated(trigger_name, GetArenaForAllocation());
+#ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (_impl_.trigger_name_.IsDefault()) {
+    _impl_.trigger_name_.Set("", GetArenaForAllocation());
+  }
+#endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DropTriggerExpr.trigger_name)
+}
+
+// bool drop_if_exists = 3;
+inline void DropTriggerExpr::clear_drop_if_exists() {
+  _impl_.drop_if_exists_ = false;
+}
+inline bool DropTriggerExpr::_internal_drop_if_exists() const {
+  return _impl_.drop_if_exists_;
+}
+inline bool DropTriggerExpr::drop_if_exists() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.DropTriggerExpr.drop_if_exists)
+  return _internal_drop_if_exists();
+}
+inline void DropTriggerExpr::_internal_set_drop_if_exists(bool value) {
+  
+  _impl_.drop_if_exists_ = value;
+}
+inline void DropTriggerExpr::set_drop_if_exists(bool value) {
+  _internal_set_drop_if_exists(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.DropTriggerExpr.drop_if_exists)
+}
+
 #ifdef __GNUC__
   #pragma GCC diagnostic pop
 #endif  // __GNUC__
@@ -16524,6 +16832,8 @@ WebhookOptions::mutable_opts() {
 
 // -------------------------------------------------------------------
 
+// -------------------------------------------------------------------
+
 
 // @@protoc_insertion_point(namespace_scope)
 

c++/greptime/v1/meta/ddl.pb.cc

@@ -221,6 +221,19 @@ struct CreateTriggerTaskDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateTriggerTaskDefaultTypeInternal _CreateTriggerTask_default_instance_;
+PROTOBUF_CONSTEXPR DropTriggerTask::DropTriggerTask(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.drop_trigger_)*/nullptr
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct DropTriggerTaskDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR DropTriggerTaskDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~DropTriggerTaskDefaultTypeInternal() {}
+  union {
+    DropTriggerTask _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DropTriggerTaskDefaultTypeInternal _DropTriggerTask_default_instance_;
 PROTOBUF_CONSTEXPR DdlTaskRequest::DdlTaskRequest(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.header_)*/nullptr
@@ -255,7 +268,7 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORIT
 }  // namespace meta
 }  // namespace v1
 }  // namespace greptime
-static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[17];
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[18];
 static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fmeta_2fddl_2eproto[1];
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fmeta_2fddl_2eproto = nullptr;
 
@@ -369,6 +382,13 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets[] PROTOBU
   ~0u,  // no _inlined_string_donated_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::CreateTriggerTask, _impl_.create_trigger_),
   ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DropTriggerTask, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DropTriggerTask, _impl_.drop_trigger_),
+  ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _internal_metadata_),
   ~0u,  // no _extensions_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _impl_._oneof_case_[0]),
@@ -391,6 +411,7 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets[] PROTOBU
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
+  ::_pbi::kInvalidFieldOffsetTag,
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _impl_.task_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskResponse, _internal_metadata_),
@@ -418,8 +439,9 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
   { 87, -1, -1, sizeof(::greptime::v1::meta::DropViewTask)},
   { 94, -1, -1, sizeof(::greptime::v1::meta::AlterDatabaseTask)},
   { 101, -1, -1, sizeof(::greptime::v1::meta::CreateTriggerTask)},
-  { 108, -1, -1, sizeof(::greptime::v1::meta::DdlTaskRequest)},
+  { 108, -1, -1, sizeof(::greptime::v1::meta::DropTriggerTask)},
-  { 132, -1, -1, sizeof(::greptime::v1::meta::DdlTaskResponse)},
+  { 115, -1, -1, sizeof(::greptime::v1::meta::DdlTaskRequest)},
+  { 140, -1, -1, sizeof(::greptime::v1::meta::DdlTaskResponse)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -438,6 +460,7 @@ static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::meta::_DropViewTask_default_instance_._instance,
   &::greptime::v1::meta::_AlterDatabaseTask_default_instance_._instance,
   &::greptime::v1::meta::_CreateTriggerTask_default_instance_._instance,
+  &::greptime::v1::meta::_DropTriggerTask_default_instance_._instance,
   &::greptime::v1::meta::_DdlTaskRequest_default_instance_._instance,
   &::greptime::v1::meta::_DdlTaskResponse_default_instance_._instance,
 };
@@ -475,40 +498,44 @@ const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto[] PROTOB
   "eTask\022,\n\004task\030\001 \001(\0132\036.greptime.v1.AlterD"
   "atabaseExpr\"K\n\021CreateTriggerTask\0226\n\016crea"
   "te_trigger\030\001 \001(\0132\036.greptime.v1.CreateTri"
-  "ggerExpr\"\271\010\n\016DdlTaskRequest\022/\n\006header\030\001 "
+  "ggerExpr\"E\n\017DropTriggerTask\0222\n\014drop_trig"
-  "\001(\0132\037.greptime.v1.meta.RequestHeader\0220\n\r"
+  "ger\030\001 \001(\0132\034.greptime.v1.DropTriggerExpr\""
-  "query_context\030@ \001(\0132\031.greptime.v1.QueryC"
+  "\371\010\n\016DdlTaskRequest\022/\n\006header\030\001 \001(\0132\037.gre"
-  "ontext\022>\n\021create_table_task\030\002 \001(\0132!.grep"
+  "ptime.v1.meta.RequestHeader\0220\n\rquery_con"
-  "time.v1.meta.CreateTableTaskH\000\022:\n\017drop_t"
+  "text\030@ \001(\0132\031.greptime.v1.QueryContext\022>\n"
-  "able_task\030\003 \001(\0132\037.greptime.v1.meta.DropT"
+  "\021create_table_task\030\002 \001(\0132!.greptime.v1.m"
-  "ableTaskH\000\022<\n\020alter_table_task\030\004 \001(\0132 .g"
+  "eta.CreateTableTaskH\000\022:\n\017drop_table_task"
-  "reptime.v1.meta.AlterTableTaskH\000\022B\n\023trun"
+  "\030\003 \001(\0132\037.greptime.v1.meta.DropTableTaskH"
-  "cate_table_task\030\005 \001(\0132#.greptime.v1.meta"
+  "\000\022<\n\020alter_table_task\030\004 \001(\0132 .greptime.v"
-  ".TruncateTableTaskH\000\022@\n\022create_table_tas"
+  "1.meta.AlterTableTaskH\000\022B\n\023truncate_tabl"
-  "ks\030\006 \001(\0132\".greptime.v1.meta.CreateTableT"
+  "e_task\030\005 \001(\0132#.greptime.v1.meta.Truncate"
-  "asksH\000\022<\n\020drop_table_tasks\030\007 \001(\0132 .grept"
+  "TableTaskH\000\022@\n\022create_table_tasks\030\006 \001(\0132"
-  "ime.v1.meta.DropTableTasksH\000\022>\n\021alter_ta"
+  "\".greptime.v1.meta.CreateTableTasksH\000\022<\n"
-  "ble_tasks\030\010 \001(\0132!.greptime.v1.meta.Alter"
+  "\020drop_table_tasks\030\007 \001(\0132 .greptime.v1.me"
-  "TableTasksH\000\022@\n\022drop_database_task\030\t \001(\013"
+  "ta.DropTableTasksH\000\022>\n\021alter_table_tasks"
-  "2\".greptime.v1.meta.DropDatabaseTaskH\000\022D"
+  "\030\010 \001(\0132!.greptime.v1.meta.AlterTableTask"
-  "\n\024create_database_task\030\n \001(\0132$.greptime."
+  "sH\000\022@\n\022drop_database_task\030\t \001(\0132\".grepti"
-  "v1.meta.CreateDatabaseTaskH\000\022<\n\020create_f"
+  "me.v1.meta.DropDatabaseTaskH\000\022D\n\024create_"
-  "low_task\030\013 \001(\0132 .greptime.v1.meta.Create"
+  "database_task\030\n \001(\0132$.greptime.v1.meta.C"
-  "FlowTaskH\000\0228\n\016drop_flow_task\030\014 \001(\0132\036.gre"
+  "reateDatabaseTaskH\000\022<\n\020create_flow_task\030"
-  "ptime.v1.meta.DropFlowTaskH\000\022<\n\020create_v"
+  "\013 \001(\0132 .greptime.v1.meta.CreateFlowTaskH"
-  "iew_task\030\r \001(\0132 .greptime.v1.meta.Create"
+  "\000\0228\n\016drop_flow_task\030\014 \001(\0132\036.greptime.v1."
-  "ViewTaskH\000\0228\n\016drop_view_task\030\016 \001(\0132\036.gre"
+  "meta.DropFlowTaskH\000\022<\n\020create_view_task\030"
-  "ptime.v1.meta.DropViewTaskH\000\022B\n\023alter_da"
+  "\r \001(\0132 .greptime.v1.meta.CreateViewTaskH"
-  "tabase_task\030\017 \001(\0132#.greptime.v1.meta.Alt"
+  "\000\0228\n\016drop_view_task\030\016 \001(\0132\036.greptime.v1."
-  "erDatabaseTaskH\000\022B\n\023create_trigger_task\030"
+  "meta.DropViewTaskH\000\022B\n\023alter_database_ta"
-  "\020 \001(\0132#.greptime.v1.meta.CreateTriggerTa"
+  "sk\030\017 \001(\0132#.greptime.v1.meta.AlterDatabas"
-  "skH\000B\006\n\004task\"\230\001\n\017DdlTaskResponse\0220\n\006head"
+  "eTaskH\000\022B\n\023create_trigger_task\030\020 \001(\0132#.g"
-  "er\030\001 \001(\0132 .greptime.v1.meta.ResponseHead"
+  "reptime.v1.meta.CreateTriggerTaskH\000\022>\n\021d"
-  "er\022*\n\003pid\030\002 \001(\0132\035.greptime.v1.meta.Proce"
+  "rop_trigger_task\030\021 \001(\0132!.greptime.v1.met"
-  "dureId\022\'\n\ttable_ids\030\005 \003(\0132\024.greptime.v1."
+  "a.DropTriggerTaskH\000B\006\n\004task\"\230\001\n\017DdlTaskR"
-  "TableId*#\n\013DdlTaskType\022\n\n\006Create\020\000\022\010\n\004Dr"
+  "esponse\0220\n\006header\030\001 \001(\0132 .greptime.v1.me"
-  "op\020\001B<Z:github.com/GreptimeTeam/greptime"
+  "ta.ResponseHeader\022*\n\003pid\030\002 \001(\0132\035.greptim"
-  "-proto/go/greptime/v1/metab\006proto3"
+  "e.v1.meta.ProcedureId\022\'\n\ttable_ids\030\005 \003(\013"
+  "2\024.greptime.v1.TableId*#\n\013DdlTaskType\022\n\n"
+  "\006Create\020\000\022\010\n\004Drop\020\001B<Z:github.com/Grepti"
+  "meTeam/greptime-proto/go/greptime/v1/met"
+  "ab\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_deps[4] = {
   &::descriptor_table_greptime_2fv1_2fcommon_2eproto,
@@ -518,9 +545,9 @@ static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmet
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto = {
-    false, false, 2634, descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto,
+    false, false, 2769, descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto,
     "greptime/v1/meta/ddl.proto",
-    &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_deps, 4, 17,
+    &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_deps, 4, 18,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets,
     file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto, file_level_enum_descriptors_greptime_2fv1_2fmeta_2fddl_2eproto,
     file_level_service_descriptors_greptime_2fv1_2fmeta_2fddl_2eproto,
@@ -3625,6 +3652,205 @@ void CreateTriggerTask::InternalSwap(CreateTriggerTask* other) {
 
 // ===================================================================
 
+class DropTriggerTask::_Internal {
+ public:
+  static const ::greptime::v1::DropTriggerExpr& drop_trigger(const DropTriggerTask* msg);
+};
+
+const ::greptime::v1::DropTriggerExpr&
+DropTriggerTask::_Internal::drop_trigger(const DropTriggerTask* msg) {
+  return *msg->_impl_.drop_trigger_;
+}
+void DropTriggerTask::clear_drop_trigger() {
+  if (GetArenaForAllocation() == nullptr && _impl_.drop_trigger_ != nullptr) {
+    delete _impl_.drop_trigger_;
+  }
+  _impl_.drop_trigger_ = nullptr;
+}
+DropTriggerTask::DropTriggerTask(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.DropTriggerTask)
+}
+DropTriggerTask::DropTriggerTask(const DropTriggerTask& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  DropTriggerTask* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.drop_trigger_){nullptr}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  if (from._internal_has_drop_trigger()) {
+    _this->_impl_.drop_trigger_ = new ::greptime::v1::DropTriggerExpr(*from._impl_.drop_trigger_);
+  }
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.DropTriggerTask)
+}
+
+inline void DropTriggerTask::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.drop_trigger_){nullptr}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+}
+
+DropTriggerTask::~DropTriggerTask() {
+  // @@protoc_insertion_point(destructor:greptime.v1.meta.DropTriggerTask)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void DropTriggerTask::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.drop_trigger_;
+}
+
+void DropTriggerTask::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void DropTriggerTask::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.meta.DropTriggerTask)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  if (GetArenaForAllocation() == nullptr && _impl_.drop_trigger_ != nullptr) {
+    delete _impl_.drop_trigger_;
+  }
+  _impl_.drop_trigger_ = nullptr;
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* DropTriggerTask::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // .greptime.v1.DropTriggerExpr drop_trigger = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          ptr = ctx->ParseMessage(_internal_mutable_drop_trigger(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* DropTriggerTask::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.meta.DropTriggerTask)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // .greptime.v1.DropTriggerExpr drop_trigger = 1;
+  if (this->_internal_has_drop_trigger()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::drop_trigger(this),
+        _Internal::drop_trigger(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.meta.DropTriggerTask)
+  return target;
+}
+
+size_t DropTriggerTask::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.meta.DropTriggerTask)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .greptime.v1.DropTriggerExpr drop_trigger = 1;
+  if (this->_internal_has_drop_trigger()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.drop_trigger_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData DropTriggerTask::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    DropTriggerTask::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*DropTriggerTask::GetClassData() const { return &_class_data_; }
+
+
+void DropTriggerTask::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<DropTriggerTask*>(&to_msg);
+  auto& from = static_cast<const DropTriggerTask&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.meta.DropTriggerTask)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (from._internal_has_drop_trigger()) {
+    _this->_internal_mutable_drop_trigger()->::greptime::v1::DropTriggerExpr::MergeFrom(
+        from._internal_drop_trigger());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void DropTriggerTask::CopyFrom(const DropTriggerTask& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.meta.DropTriggerTask)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool DropTriggerTask::IsInitialized() const {
+  return true;
+}
+
+void DropTriggerTask::InternalSwap(DropTriggerTask* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_.drop_trigger_, other->_impl_.drop_trigger_);
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata DropTriggerTask::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[15]);
+}
+
+// ===================================================================
+
 class DdlTaskRequest::_Internal {
  public:
   static const ::greptime::v1::meta::RequestHeader& header(const DdlTaskRequest* msg);
@@ -3644,6 +3870,7 @@ class DdlTaskRequest::_Internal {
   static const ::greptime::v1::meta::DropViewTask& drop_view_task(const DdlTaskRequest* msg);
   static const ::greptime::v1::meta::AlterDatabaseTask& alter_database_task(const DdlTaskRequest* msg);
   static const ::greptime::v1::meta::CreateTriggerTask& create_trigger_task(const DdlTaskRequest* msg);
+  static const ::greptime::v1::meta::DropTriggerTask& drop_trigger_task(const DdlTaskRequest* msg);
 };
 
 const ::greptime::v1::meta::RequestHeader&
@@ -3714,6 +3941,10 @@ const ::greptime::v1::meta::CreateTriggerTask&
 DdlTaskRequest::_Internal::create_trigger_task(const DdlTaskRequest* msg) {
   return *msg->_impl_.task_.create_trigger_task_;
 }
+const ::greptime::v1::meta::DropTriggerTask&
+DdlTaskRequest::_Internal::drop_trigger_task(const DdlTaskRequest* msg) {
+  return *msg->_impl_.task_.drop_trigger_task_;
+}
 void DdlTaskRequest::clear_header() {
   if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
     delete _impl_.header_;
@@ -3951,6 +4182,21 @@ void DdlTaskRequest::set_allocated_create_trigger_task(::greptime::v1::meta::Cre
   }
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.create_trigger_task)
 }
+void DdlTaskRequest::set_allocated_drop_trigger_task(::greptime::v1::meta::DropTriggerTask* drop_trigger_task) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  clear_task();
+  if (drop_trigger_task) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(drop_trigger_task);
+    if (message_arena != submessage_arena) {
+      drop_trigger_task = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, drop_trigger_task, submessage_arena);
+    }
+    set_has_drop_trigger_task();
+    _impl_.task_.drop_trigger_task_ = drop_trigger_task;
+  }
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DdlTaskRequest.drop_trigger_task)
+}
 DdlTaskRequest::DdlTaskRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
@@ -4051,6 +4297,11 @@ DdlTaskRequest::DdlTaskRequest(const DdlTaskRequest& from)
           from._internal_create_trigger_task());
       break;
     }
+    case kDropTriggerTask: {
+      _this->_internal_mutable_drop_trigger_task()->::greptime::v1::meta::DropTriggerTask::MergeFrom(
+          from._internal_drop_trigger_task());
+      break;
+    }
     case TASK_NOT_SET: {
       break;
     }
@@ -4187,6 +4438,12 @@ void DdlTaskRequest::clear_task() {
       }
       break;
     }
+    case kDropTriggerTask: {
+      if (GetArenaForAllocation() == nullptr) {
+        delete _impl_.task_.drop_trigger_task_;
+      }
+      break;
+    }
     case TASK_NOT_SET: {
       break;
     }
@@ -4347,6 +4604,14 @@ const char* DdlTaskRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext
         } else
           goto handle_unusual;
         continue;
+      // .greptime.v1.meta.DropTriggerTask drop_trigger_task = 17;
+      case 17:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 138)) {
+          ptr = ctx->ParseMessage(_internal_mutable_drop_trigger_task(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
       // .greptime.v1.QueryContext query_context = 64;
       case 64:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 2)) {
@@ -4496,6 +4761,13 @@ uint8_t* DdlTaskRequest::_InternalSerialize(
         _Internal::create_trigger_task(this).GetCachedSize(), target, stream);
   }
 
+  // .greptime.v1.meta.DropTriggerTask drop_trigger_task = 17;
+  if (_internal_has_drop_trigger_task()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(17, _Internal::drop_trigger_task(this),
+        _Internal::drop_trigger_task(this).GetCachedSize(), target, stream);
+  }
+
   // .greptime.v1.QueryContext query_context = 64;
   if (this->_internal_has_query_context()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
@@ -4639,6 +4911,13 @@ size_t DdlTaskRequest::ByteSizeLong() const {
           *_impl_.task_.create_trigger_task_);
       break;
     }
+    // .greptime.v1.meta.DropTriggerTask drop_trigger_task = 17;
+    case kDropTriggerTask: {
+      total_size += 2 +
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+          *_impl_.task_.drop_trigger_task_);
+      break;
+    }
     case TASK_NOT_SET: {
       break;
     }
@@ -4745,6 +5024,11 @@ void DdlTaskRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const :
           from._internal_create_trigger_task());
       break;
     }
+    case kDropTriggerTask: {
+      _this->_internal_mutable_drop_trigger_task()->::greptime::v1::meta::DropTriggerTask::MergeFrom(
+          from._internal_drop_trigger_task());
+      break;
+    }
     case TASK_NOT_SET: {
       break;
     }
@@ -4779,7 +5063,7 @@ void DdlTaskRequest::InternalSwap(DdlTaskRequest* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata DdlTaskRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[15]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[16]);
 }
 
 // ===================================================================
@@ -5067,7 +5351,7 @@ void DdlTaskResponse::InternalSwap(DdlTaskResponse* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata DdlTaskResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[16]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fddl_2eproto[17]);
 }
 
 // @@protoc_insertion_point(namespace_scope)
@@ -5135,6 +5419,10 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::meta::CreateTriggerTask*
 Arena::CreateMaybeMessage< ::greptime::v1::meta::CreateTriggerTask >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::meta::CreateTriggerTask >(arena);
 }
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::DropTriggerTask*
+Arena::CreateMaybeMessage< ::greptime::v1::meta::DropTriggerTask >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::DropTriggerTask >(arena);
+}
 template<> PROTOBUF_NOINLINE ::greptime::v1::meta::DdlTaskRequest*
 Arena::CreateMaybeMessage< ::greptime::v1::meta::DdlTaskRequest >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::meta::DdlTaskRequest >(arena);

c++/greptime/v1/meta/ddl.pb.h

@@ -97,6 +97,9 @@ extern DropTableTaskDefaultTypeInternal _DropTableTask_default_instance_;
 class DropTableTasks;
 struct DropTableTasksDefaultTypeInternal;
 extern DropTableTasksDefaultTypeInternal _DropTableTasks_default_instance_;
+class DropTriggerTask;
+struct DropTriggerTaskDefaultTypeInternal;
+extern DropTriggerTaskDefaultTypeInternal _DropTriggerTask_default_instance_;
 class DropViewTask;
 struct DropViewTaskDefaultTypeInternal;
 extern DropViewTaskDefaultTypeInternal _DropViewTask_default_instance_;
@@ -122,6 +125,7 @@ template<> ::greptime::v1::meta::DropDatabaseTask* Arena::CreateMaybeMessage<::g
 template<> ::greptime::v1::meta::DropFlowTask* Arena::CreateMaybeMessage<::greptime::v1::meta::DropFlowTask>(Arena*);
 template<> ::greptime::v1::meta::DropTableTask* Arena::CreateMaybeMessage<::greptime::v1::meta::DropTableTask>(Arena*);
 template<> ::greptime::v1::meta::DropTableTasks* Arena::CreateMaybeMessage<::greptime::v1::meta::DropTableTasks>(Arena*);
+template<> ::greptime::v1::meta::DropTriggerTask* Arena::CreateMaybeMessage<::greptime::v1::meta::DropTriggerTask>(Arena*);
 template<> ::greptime::v1::meta::DropViewTask* Arena::CreateMaybeMessage<::greptime::v1::meta::DropViewTask>(Arena*);
 template<> ::greptime::v1::meta::TruncateTableTask* Arena::CreateMaybeMessage<::greptime::v1::meta::TruncateTableTask>(Arena*);
 PROTOBUF_NAMESPACE_CLOSE
@@ -2563,6 +2567,163 @@ class CreateTriggerTask final :
 };
 // -------------------------------------------------------------------
 
+class DropTriggerTask final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.DropTriggerTask) */ {
+ public:
+  inline DropTriggerTask() : DropTriggerTask(nullptr) {}
+  ~DropTriggerTask() override;
+  explicit PROTOBUF_CONSTEXPR DropTriggerTask(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  DropTriggerTask(const DropTriggerTask& from);
+  DropTriggerTask(DropTriggerTask&& from) noexcept
+    : DropTriggerTask() {
+    *this = ::std::move(from);
+  }
+
+  inline DropTriggerTask& operator=(const DropTriggerTask& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline DropTriggerTask& operator=(DropTriggerTask&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const DropTriggerTask& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const DropTriggerTask* internal_default_instance() {
+    return reinterpret_cast<const DropTriggerTask*>(
+               &_DropTriggerTask_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    15;
+
+  friend void swap(DropTriggerTask& a, DropTriggerTask& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(DropTriggerTask* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(DropTriggerTask* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  DropTriggerTask* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<DropTriggerTask>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const DropTriggerTask& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const DropTriggerTask& from) {
+    DropTriggerTask::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(DropTriggerTask* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.meta.DropTriggerTask";
+  }
+  protected:
+  explicit DropTriggerTask(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kDropTriggerFieldNumber = 1,
+  };
+  // .greptime.v1.DropTriggerExpr drop_trigger = 1;
+  bool has_drop_trigger() const;
+  private:
+  bool _internal_has_drop_trigger() const;
+  public:
+  void clear_drop_trigger();
+  const ::greptime::v1::DropTriggerExpr& drop_trigger() const;
+  PROTOBUF_NODISCARD ::greptime::v1::DropTriggerExpr* release_drop_trigger();
+  ::greptime::v1::DropTriggerExpr* mutable_drop_trigger();
+  void set_allocated_drop_trigger(::greptime::v1::DropTriggerExpr* drop_trigger);
+  private:
+  const ::greptime::v1::DropTriggerExpr& _internal_drop_trigger() const;
+  ::greptime::v1::DropTriggerExpr* _internal_mutable_drop_trigger();
+  public:
+  void unsafe_arena_set_allocated_drop_trigger(
+      ::greptime::v1::DropTriggerExpr* drop_trigger);
+  ::greptime::v1::DropTriggerExpr* unsafe_arena_release_drop_trigger();
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.meta.DropTriggerTask)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::greptime::v1::DropTriggerExpr* drop_trigger_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto;
+};
+// -------------------------------------------------------------------
+
 class DdlTaskRequest final :
     public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.DdlTaskRequest) */ {
  public:
@@ -2622,6 +2783,7 @@ class DdlTaskRequest final :
     kDropViewTask = 14,
     kAlterDatabaseTask = 15,
     kCreateTriggerTask = 16,
+    kDropTriggerTask = 17,
     TASK_NOT_SET = 0,
   };
 
@@ -2630,7 +2792,7 @@ class DdlTaskRequest final :
                &_DdlTaskRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    15;
+    16;
 
   friend void swap(DdlTaskRequest& a, DdlTaskRequest& b) {
     a.Swap(&b);
@@ -2720,6 +2882,7 @@ class DdlTaskRequest final :
     kDropViewTaskFieldNumber = 14,
     kAlterDatabaseTaskFieldNumber = 15,
     kCreateTriggerTaskFieldNumber = 16,
+    kDropTriggerTaskFieldNumber = 17,
   };
   // .greptime.v1.meta.RequestHeader header = 1;
   bool has_header() const;
@@ -3027,6 +3190,24 @@ class DdlTaskRequest final :
       ::greptime::v1::meta::CreateTriggerTask* create_trigger_task);
   ::greptime::v1::meta::CreateTriggerTask* unsafe_arena_release_create_trigger_task();
 
+  // .greptime.v1.meta.DropTriggerTask drop_trigger_task = 17;
+  bool has_drop_trigger_task() const;
+  private:
+  bool _internal_has_drop_trigger_task() const;
+  public:
+  void clear_drop_trigger_task();
+  const ::greptime::v1::meta::DropTriggerTask& drop_trigger_task() const;
+  PROTOBUF_NODISCARD ::greptime::v1::meta::DropTriggerTask* release_drop_trigger_task();
+  ::greptime::v1::meta::DropTriggerTask* mutable_drop_trigger_task();
+  void set_allocated_drop_trigger_task(::greptime::v1::meta::DropTriggerTask* drop_trigger_task);
+  private:
+  const ::greptime::v1::meta::DropTriggerTask& _internal_drop_trigger_task() const;
+  ::greptime::v1::meta::DropTriggerTask* _internal_mutable_drop_trigger_task();
+  public:
+  void unsafe_arena_set_allocated_drop_trigger_task(
+      ::greptime::v1::meta::DropTriggerTask* drop_trigger_task);
+  ::greptime::v1::meta::DropTriggerTask* unsafe_arena_release_drop_trigger_task();
+
   void clear_task();
   TaskCase task_case() const;
   // @@protoc_insertion_point(class_scope:greptime.v1.meta.DdlTaskRequest)
@@ -3047,6 +3228,7 @@ class DdlTaskRequest final :
   void set_has_drop_view_task();
   void set_has_alter_database_task();
   void set_has_create_trigger_task();
+  void set_has_drop_trigger_task();
 
   inline bool has_task() const;
   inline void clear_has_task();
@@ -3075,6 +3257,7 @@ class DdlTaskRequest final :
       ::greptime::v1::meta::DropViewTask* drop_view_task_;
       ::greptime::v1::meta::AlterDatabaseTask* alter_database_task_;
       ::greptime::v1::meta::CreateTriggerTask* create_trigger_task_;
+      ::greptime::v1::meta::DropTriggerTask* drop_trigger_task_;
     } task_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
     uint32_t _oneof_case_[1];
@@ -3133,7 +3316,7 @@ class DdlTaskResponse final :
                &_DdlTaskResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    16;
+    17;
 
   friend void swap(DdlTaskResponse& a, DdlTaskResponse& b) {
     a.Swap(&b);
@@ -4626,6 +4809,95 @@ inline void CreateTriggerTask::set_allocated_create_trigger(::greptime::v1::Crea
 
 // -------------------------------------------------------------------
 
+// DropTriggerTask
+
+// .greptime.v1.DropTriggerExpr drop_trigger = 1;
+inline bool DropTriggerTask::_internal_has_drop_trigger() const {
+  return this != internal_default_instance() && _impl_.drop_trigger_ != nullptr;
+}
+inline bool DropTriggerTask::has_drop_trigger() const {
+  return _internal_has_drop_trigger();
+}
+inline const ::greptime::v1::DropTriggerExpr& DropTriggerTask::_internal_drop_trigger() const {
+  const ::greptime::v1::DropTriggerExpr* p = _impl_.drop_trigger_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::DropTriggerExpr&>(
+      ::greptime::v1::_DropTriggerExpr_default_instance_);
+}
+inline const ::greptime::v1::DropTriggerExpr& DropTriggerTask::drop_trigger() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.DropTriggerTask.drop_trigger)
+  return _internal_drop_trigger();
+}
+inline void DropTriggerTask::unsafe_arena_set_allocated_drop_trigger(
+    ::greptime::v1::DropTriggerExpr* drop_trigger) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.drop_trigger_);
+  }
+  _impl_.drop_trigger_ = drop_trigger;
+  if (drop_trigger) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.DropTriggerTask.drop_trigger)
+}
+inline ::greptime::v1::DropTriggerExpr* DropTriggerTask::release_drop_trigger() {
+  
+  ::greptime::v1::DropTriggerExpr* temp = _impl_.drop_trigger_;
+  _impl_.drop_trigger_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::DropTriggerExpr* DropTriggerTask::unsafe_arena_release_drop_trigger() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.DropTriggerTask.drop_trigger)
+  
+  ::greptime::v1::DropTriggerExpr* temp = _impl_.drop_trigger_;
+  _impl_.drop_trigger_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::DropTriggerExpr* DropTriggerTask::_internal_mutable_drop_trigger() {
+  
+  if (_impl_.drop_trigger_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::DropTriggerExpr>(GetArenaForAllocation());
+    _impl_.drop_trigger_ = p;
+  }
+  return _impl_.drop_trigger_;
+}
+inline ::greptime::v1::DropTriggerExpr* DropTriggerTask::mutable_drop_trigger() {
+  ::greptime::v1::DropTriggerExpr* _msg = _internal_mutable_drop_trigger();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.DropTriggerTask.drop_trigger)
+  return _msg;
+}
+inline void DropTriggerTask::set_allocated_drop_trigger(::greptime::v1::DropTriggerExpr* drop_trigger) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.drop_trigger_);
+  }
+  if (drop_trigger) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(drop_trigger));
+    if (message_arena != submessage_arena) {
+      drop_trigger = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, drop_trigger, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.drop_trigger_ = drop_trigger;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DropTriggerTask.drop_trigger)
+}
+
+// -------------------------------------------------------------------
+
 // DdlTaskRequest
 
 // .greptime.v1.meta.RequestHeader header = 1;
@@ -5908,6 +6180,80 @@ inline ::greptime::v1::meta::CreateTriggerTask* DdlTaskRequest::mutable_create_t
   return _msg;
 }
 
+// .greptime.v1.meta.DropTriggerTask drop_trigger_task = 17;
+inline bool DdlTaskRequest::_internal_has_drop_trigger_task() const {
+  return task_case() == kDropTriggerTask;
+}
+inline bool DdlTaskRequest::has_drop_trigger_task() const {
+  return _internal_has_drop_trigger_task();
+}
+inline void DdlTaskRequest::set_has_drop_trigger_task() {
+  _impl_._oneof_case_[0] = kDropTriggerTask;
+}
+inline void DdlTaskRequest::clear_drop_trigger_task() {
+  if (_internal_has_drop_trigger_task()) {
+    if (GetArenaForAllocation() == nullptr) {
+      delete _impl_.task_.drop_trigger_task_;
+    }
+    clear_has_task();
+  }
+}
+inline ::greptime::v1::meta::DropTriggerTask* DdlTaskRequest::release_drop_trigger_task() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.DdlTaskRequest.drop_trigger_task)
+  if (_internal_has_drop_trigger_task()) {
+    clear_has_task();
+    ::greptime::v1::meta::DropTriggerTask* temp = _impl_.task_.drop_trigger_task_;
+    if (GetArenaForAllocation() != nullptr) {
+      temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.task_.drop_trigger_task_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline const ::greptime::v1::meta::DropTriggerTask& DdlTaskRequest::_internal_drop_trigger_task() const {
+  return _internal_has_drop_trigger_task()
+      ? *_impl_.task_.drop_trigger_task_
+      : reinterpret_cast< ::greptime::v1::meta::DropTriggerTask&>(::greptime::v1::meta::_DropTriggerTask_default_instance_);
+}
+inline const ::greptime::v1::meta::DropTriggerTask& DdlTaskRequest::drop_trigger_task() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.DdlTaskRequest.drop_trigger_task)
+  return _internal_drop_trigger_task();
+}
+inline ::greptime::v1::meta::DropTriggerTask* DdlTaskRequest::unsafe_arena_release_drop_trigger_task() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.meta.DdlTaskRequest.drop_trigger_task)
+  if (_internal_has_drop_trigger_task()) {
+    clear_has_task();
+    ::greptime::v1::meta::DropTriggerTask* temp = _impl_.task_.drop_trigger_task_;
+    _impl_.task_.drop_trigger_task_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline void DdlTaskRequest::unsafe_arena_set_allocated_drop_trigger_task(::greptime::v1::meta::DropTriggerTask* drop_trigger_task) {
+  clear_task();
+  if (drop_trigger_task) {
+    set_has_drop_trigger_task();
+    _impl_.task_.drop_trigger_task_ = drop_trigger_task;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.DdlTaskRequest.drop_trigger_task)
+}
+inline ::greptime::v1::meta::DropTriggerTask* DdlTaskRequest::_internal_mutable_drop_trigger_task() {
+  if (!_internal_has_drop_trigger_task()) {
+    clear_task();
+    set_has_drop_trigger_task();
+    _impl_.task_.drop_trigger_task_ = CreateMaybeMessage< ::greptime::v1::meta::DropTriggerTask >(GetArenaForAllocation());
+  }
+  return _impl_.task_.drop_trigger_task_;
+}
+inline ::greptime::v1::meta::DropTriggerTask* DdlTaskRequest::mutable_drop_trigger_task() {
+  ::greptime::v1::meta::DropTriggerTask* _msg = _internal_mutable_drop_trigger_task();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.DdlTaskRequest.drop_trigger_task)
+  return _msg;
+}
+
 inline bool DdlTaskRequest::has_task() const {
   return task_case() != TASK_NOT_SET;
 }
@@ -6163,6 +6509,8 @@ DdlTaskResponse::table_ids() const {
 
 // -------------------------------------------------------------------
 
+// -------------------------------------------------------------------
+
 
 // @@protoc_insertion_point(namespace_scope)
 

go/greptime/v1/ddl.pb.go

@@ -3237,6 +3237,69 @@ func (x *WebhookOptions) GetOpts() map[string]string {
 	return nil
 }
 
+type DropTriggerExpr struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	CatalogName  string `protobuf:"bytes,1,opt,name=catalog_name,json=catalogName,proto3" json:"catalog_name,omitempty"`
+	TriggerName  string `protobuf:"bytes,2,opt,name=trigger_name,json=triggerName,proto3" json:"trigger_name,omitempty"`
+	DropIfExists bool   `protobuf:"varint,3,opt,name=drop_if_exists,json=dropIfExists,proto3" json:"drop_if_exists,omitempty"`
+}
+
+func (x *DropTriggerExpr) Reset() {
+	*x = DropTriggerExpr{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_ddl_proto_msgTypes[41]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DropTriggerExpr) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DropTriggerExpr) ProtoMessage() {}
+
+func (x *DropTriggerExpr) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_ddl_proto_msgTypes[41]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DropTriggerExpr.ProtoReflect.Descriptor instead.
+func (*DropTriggerExpr) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_ddl_proto_rawDescGZIP(), []int{41}
+}
+
+func (x *DropTriggerExpr) GetCatalogName() string {
+	if x != nil {
+		return x.CatalogName
+	}
+	return ""
+}
+
+func (x *DropTriggerExpr) GetTriggerName() string {
+	if x != nil {
+		return x.TriggerName
+	}
+	return ""
+}
+
+func (x *DropTriggerExpr) GetDropIfExists() bool {
+	if x != nil {
+		return x.DropIfExists
+	}
+	return false
+}
+
 var File_greptime_v1_ddl_proto protoreflect.FileDescriptor
 
 var file_greptime_v1_ddl_proto_rawDesc = []byte{
@@ -3734,19 +3797,27 @@ var file_greptime_v1_ddl_proto_rawDesc = []byte{
 	0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20,
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+	0x5f, 0x46, 0x49, 0x4c, 0x54, 0x45, 0x52, 0x10, 0x00, 0x42, 0x4c, 0x0a, 0x0e, 0x69, 0x6f, 0x2e,
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+	0x70, 0x74, 0x69, 0x6d, 0x65, 0x54, 0x65, 0x61, 0x6d, 0x2f, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69,
+	0x6d, 0x65, 0x2d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x2f, 0x67, 0x72, 0x65, 0x70,
+	0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -3762,7 +3833,7 @@ func file_greptime_v1_ddl_proto_rawDescGZIP() []byte {
 }
 
 var file_greptime_v1_ddl_proto_enumTypes = make([]protoimpl.EnumInfo, 4)
-var file_greptime_v1_ddl_proto_msgTypes = make([]protoimpl.MessageInfo, 47)
+var file_greptime_v1_ddl_proto_msgTypes = make([]protoimpl.MessageInfo, 48)
 var file_greptime_v1_ddl_proto_goTypes = []interface{}{
 	(Analyzer)(0),                       // 0: greptime.v1.Analyzer
 	(FulltextBackend)(0),                // 1: greptime.v1.FulltextBackend
@@ -3809,18 +3880,19 @@ var file_greptime_v1_ddl_proto_goTypes = []interface{}{
 	(*CreateTriggerExpr)(nil),           // 42: greptime.v1.CreateTriggerExpr
 	(*NotifyChannel)(nil),               // 43: greptime.v1.NotifyChannel
 	(*WebhookOptions)(nil),              // 44: greptime.v1.WebhookOptions
-	nil,                                 // 45: greptime.v1.CreateFlowExpr.FlowOptionsEntry
+	(*DropTriggerExpr)(nil),             // 45: greptime.v1.DropTriggerExpr
-	nil,                                 // 46: greptime.v1.CreateTableExpr.TableOptionsEntry
+	nil,                                 // 46: greptime.v1.CreateFlowExpr.FlowOptionsEntry
-	nil,                                 // 47: greptime.v1.CreateDatabaseExpr.OptionsEntry
+	nil,                                 // 47: greptime.v1.CreateTableExpr.TableOptionsEntry
-	nil,                                 // 48: greptime.v1.CreateTriggerExpr.LabelsEntry
+	nil,                                 // 48: greptime.v1.CreateDatabaseExpr.OptionsEntry
-	nil,                                 // 49: greptime.v1.CreateTriggerExpr.AnnotationsEntry
+	nil,                                 // 49: greptime.v1.CreateTriggerExpr.LabelsEntry
-	nil,                                 // 50: greptime.v1.WebhookOptions.OptsEntry
+	nil,                                 // 50: greptime.v1.CreateTriggerExpr.AnnotationsEntry
-	(*TableName)(nil),                   // 51: greptime.v1.TableName
+	nil,                                 // 51: greptime.v1.WebhookOptions.OptsEntry
-	(*ExpireAfter)(nil),                 // 52: greptime.v1.ExpireAfter
+	(*TableName)(nil),                   // 52: greptime.v1.TableName
-	(ColumnDataType)(0),                 // 53: greptime.v1.ColumnDataType
+	(*ExpireAfter)(nil),                 // 53: greptime.v1.ExpireAfter
-	(*ColumnDataTypeExtension)(nil),     // 54: greptime.v1.ColumnDataTypeExtension
+	(ColumnDataType)(0),                 // 54: greptime.v1.ColumnDataType
-	(SemanticType)(0),                   // 55: greptime.v1.SemanticType
+	(*ColumnDataTypeExtension)(nil),     // 55: greptime.v1.ColumnDataTypeExtension
-	(*ColumnOptions)(nil),               // 56: greptime.v1.ColumnOptions
+	(SemanticType)(0),                   // 56: greptime.v1.SemanticType
+	(*ColumnOptions)(nil),               // 57: greptime.v1.ColumnOptions
 }
 var file_greptime_v1_ddl_proto_depIdxs = []int32{
 	15, // 0: greptime.v1.DdlRequest.create_database:type_name -> greptime.v1.CreateDatabaseExpr
@@ -3833,15 +3905,15 @@ var file_greptime_v1_ddl_proto_depIdxs = []int32{
 	7,  // 7: greptime.v1.DdlRequest.create_view:type_name -> greptime.v1.CreateViewExpr
 	8,  // 8: greptime.v1.DdlRequest.drop_view:type_name -> greptime.v1.DropViewExpr
 	39, // 9: greptime.v1.DdlRequest.alter_database:type_name -> greptime.v1.AlterDatabaseExpr
-	51, // 10: greptime.v1.CreateFlowExpr.source_table_names:type_name -> greptime.v1.TableName
+	52, // 10: greptime.v1.CreateFlowExpr.source_table_names:type_name -> greptime.v1.TableName
-	51, // 11: greptime.v1.CreateFlowExpr.sink_table_name:type_name -> greptime.v1.TableName
+	52, // 11: greptime.v1.CreateFlowExpr.sink_table_name:type_name -> greptime.v1.TableName
-	52, // 12: greptime.v1.CreateFlowExpr.expire_after:type_name -> greptime.v1.ExpireAfter
+	53, // 12: greptime.v1.CreateFlowExpr.expire_after:type_name -> greptime.v1.ExpireAfter
-	45, // 13: greptime.v1.CreateFlowExpr.flow_options:type_name -> greptime.v1.CreateFlowExpr.FlowOptionsEntry
+	46, // 13: greptime.v1.CreateFlowExpr.flow_options:type_name -> greptime.v1.CreateFlowExpr.FlowOptionsEntry
 	30, // 14: greptime.v1.DropFlowExpr.flow_id:type_name -> greptime.v1.FlowId
-	51, // 15: greptime.v1.CreateViewExpr.table_names:type_name -> greptime.v1.TableName
+	52, // 15: greptime.v1.CreateViewExpr.table_names:type_name -> greptime.v1.TableName
 	29, // 16: greptime.v1.DropViewExpr.view_id:type_name -> greptime.v1.TableId
 	31, // 17: greptime.v1.CreateTableExpr.column_defs:type_name -> greptime.v1.ColumnDef
-	46, // 18: greptime.v1.CreateTableExpr.table_options:type_name -> greptime.v1.CreateTableExpr.TableOptionsEntry
+	47, // 18: greptime.v1.CreateTableExpr.table_options:type_name -> greptime.v1.CreateTableExpr.TableOptionsEntry
 	29, // 19: greptime.v1.CreateTableExpr.table_id:type_name -> greptime.v1.TableId
 	18, // 20: greptime.v1.AlterTableExpr.add_columns:type_name -> greptime.v1.AddColumns
 	20, // 21: greptime.v1.AlterTableExpr.drop_columns:type_name -> greptime.v1.DropColumns
@@ -3859,7 +3931,7 @@ var file_greptime_v1_ddl_proto_depIdxs = []int32{
 	36, // 33: greptime.v1.UnsetIndex.inverted:type_name -> greptime.v1.UnsetInverted
 	38, // 34: greptime.v1.UnsetIndex.skipping:type_name -> greptime.v1.UnsetSkipping
 	29, // 35: greptime.v1.DropTableExpr.table_id:type_name -> greptime.v1.TableId
-	47, // 36: greptime.v1.CreateDatabaseExpr.options:type_name -> greptime.v1.CreateDatabaseExpr.OptionsEntry
+	48, // 36: greptime.v1.CreateDatabaseExpr.options:type_name -> greptime.v1.CreateDatabaseExpr.OptionsEntry
 	29, // 37: greptime.v1.TruncateTableExpr.table_id:type_name -> greptime.v1.TableId
 	23, // 38: greptime.v1.AddColumns.add_columns:type_name -> greptime.v1.AddColumn
 	11, // 39: greptime.v1.DropDefaults.drop_defaults:type_name -> greptime.v1.DropDefault
@@ -3867,13 +3939,13 @@ var file_greptime_v1_ddl_proto_depIdxs = []int32{
 	24, // 41: greptime.v1.ModifyColumnTypes.modify_column_types:type_name -> greptime.v1.ModifyColumnType
 	31, // 42: greptime.v1.AddColumn.column_def:type_name -> greptime.v1.ColumnDef
 	32, // 43: greptime.v1.AddColumn.location:type_name -> greptime.v1.AddColumnLocation
-	53, // 44: greptime.v1.ModifyColumnType.target_type:type_name -> greptime.v1.ColumnDataType
+	54, // 44: greptime.v1.ModifyColumnType.target_type:type_name -> greptime.v1.ColumnDataType
-	54, // 45: greptime.v1.ModifyColumnType.target_type_extension:type_name -> greptime.v1.ColumnDataTypeExtension
+	55, // 45: greptime.v1.ModifyColumnType.target_type_extension:type_name -> greptime.v1.ColumnDataTypeExtension
 	25, // 46: greptime.v1.SetTableOptions.table_options:type_name -> greptime.v1.Option
-	53, // 47: greptime.v1.ColumnDef.data_type:type_name -> greptime.v1.ColumnDataType
+	54, // 47: greptime.v1.ColumnDef.data_type:type_name -> greptime.v1.ColumnDataType
-	55, // 48: greptime.v1.ColumnDef.semantic_type:type_name -> greptime.v1.SemanticType
+	56, // 48: greptime.v1.ColumnDef.semantic_type:type_name -> greptime.v1.SemanticType
-	54, // 49: greptime.v1.ColumnDef.datatype_extension:type_name -> greptime.v1.ColumnDataTypeExtension
+	55, // 49: greptime.v1.ColumnDef.datatype_extension:type_name -> greptime.v1.ColumnDataTypeExtension
-	56, // 50: greptime.v1.ColumnDef.options:type_name -> greptime.v1.ColumnOptions
+	57, // 50: greptime.v1.ColumnDef.options:type_name -> greptime.v1.ColumnOptions
 	3,  // 51: greptime.v1.AddColumnLocation.location_type:type_name -> greptime.v1.AddColumnLocation.LocationType
 	0,  // 52: greptime.v1.SetFulltext.analyzer:type_name -> greptime.v1.Analyzer
 	1,  // 53: greptime.v1.SetFulltext.backend:type_name -> greptime.v1.FulltextBackend
@@ -3882,10 +3954,10 @@ var file_greptime_v1_ddl_proto_depIdxs = []int32{
 	41, // 56: greptime.v1.AlterDatabaseExpr.unset_database_options:type_name -> greptime.v1.UnsetDatabaseOptions
 	25, // 57: greptime.v1.SetDatabaseOptions.set_database_options:type_name -> greptime.v1.Option
 	43, // 58: greptime.v1.CreateTriggerExpr.channels:type_name -> greptime.v1.NotifyChannel
-	48, // 59: greptime.v1.CreateTriggerExpr.labels:type_name -> greptime.v1.CreateTriggerExpr.LabelsEntry
+	49, // 59: greptime.v1.CreateTriggerExpr.labels:type_name -> greptime.v1.CreateTriggerExpr.LabelsEntry
-	49, // 60: greptime.v1.CreateTriggerExpr.annotations:type_name -> greptime.v1.CreateTriggerExpr.AnnotationsEntry
+	50, // 60: greptime.v1.CreateTriggerExpr.annotations:type_name -> greptime.v1.CreateTriggerExpr.AnnotationsEntry
 	44, // 61: greptime.v1.NotifyChannel.webhook:type_name -> greptime.v1.WebhookOptions
-	50, // 62: greptime.v1.WebhookOptions.opts:type_name -> greptime.v1.WebhookOptions.OptsEntry
+	51, // 62: greptime.v1.WebhookOptions.opts:type_name -> greptime.v1.WebhookOptions.OptsEntry
 	63, // [63:63] is the sub-list for method output_type
 	63, // [63:63] is the sub-list for method input_type
 	63, // [63:63] is the sub-list for extension type_name
@@ -4392,6 +4464,18 @@ func file_greptime_v1_ddl_proto_init() {
 				return nil
 			}
 		}
+		file_greptime_v1_ddl_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DropTriggerExpr); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_greptime_v1_ddl_proto_msgTypes[0].OneofWrappers = []interface{}{
 		(*DdlRequest_CreateDatabase)(nil),
@@ -4439,7 +4523,7 @@ func file_greptime_v1_ddl_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_greptime_v1_ddl_proto_rawDesc,
 			NumEnums:      4,
-			NumMessages:   47,
+			NumMessages:   48,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

go/greptime/v1/meta/ddl.pb.go

@@ -813,6 +813,53 @@ func (x *CreateTriggerTask) GetCreateTrigger() *v1.CreateTriggerExpr {
 	return nil
 }
 
+type DropTriggerTask struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	DropTrigger *v1.DropTriggerExpr `protobuf:"bytes,1,opt,name=drop_trigger,json=dropTrigger,proto3" json:"drop_trigger,omitempty"`
+}
+
+func (x *DropTriggerTask) Reset() {
+	*x = DropTriggerTask{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_meta_ddl_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DropTriggerTask) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DropTriggerTask) ProtoMessage() {}
+
+func (x *DropTriggerTask) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_meta_ddl_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DropTriggerTask.ProtoReflect.Descriptor instead.
+func (*DropTriggerTask) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{15}
+}
+
+func (x *DropTriggerTask) GetDropTrigger() *v1.DropTriggerExpr {
+	if x != nil {
+		return x.DropTrigger
+	}
+	return nil
+}
+
 type DdlTaskRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -837,13 +884,14 @@ type DdlTaskRequest struct {
 	//	*DdlTaskRequest_DropViewTask
 	//	*DdlTaskRequest_AlterDatabaseTask
 	//	*DdlTaskRequest_CreateTriggerTask
+	//	*DdlTaskRequest_DropTriggerTask
 	Task isDdlTaskRequest_Task `protobuf_oneof:"task"`
 }
 
 func (x *DdlTaskRequest) Reset() {
 	*x = DdlTaskRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_greptime_v1_meta_ddl_proto_msgTypes[15]
+		mi := &file_greptime_v1_meta_ddl_proto_msgTypes[16]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -856,7 +904,7 @@ func (x *DdlTaskRequest) String() string {
 func (*DdlTaskRequest) ProtoMessage() {}
 
 func (x *DdlTaskRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_greptime_v1_meta_ddl_proto_msgTypes[15]
+	mi := &file_greptime_v1_meta_ddl_proto_msgTypes[16]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -869,7 +917,7 @@ func (x *DdlTaskRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DdlTaskRequest.ProtoReflect.Descriptor instead.
 func (*DdlTaskRequest) Descriptor() ([]byte, []int) {
-	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{15}
+	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *DdlTaskRequest) GetHeader() *RequestHeader {
@@ -998,6 +1046,13 @@ func (x *DdlTaskRequest) GetCreateTriggerTask() *CreateTriggerTask {
 	return nil
 }
 
+func (x *DdlTaskRequest) GetDropTriggerTask() *DropTriggerTask {
+	if x, ok := x.GetTask().(*DdlTaskRequest_DropTriggerTask); ok {
+		return x.DropTriggerTask
+	}
+	return nil
+}
+
 type isDdlTaskRequest_Task interface {
 	isDdlTaskRequest_Task()
 }
@@ -1062,6 +1117,10 @@ type DdlTaskRequest_CreateTriggerTask struct {
 	CreateTriggerTask *CreateTriggerTask `protobuf:"bytes,16,opt,name=create_trigger_task,json=createTriggerTask,proto3,oneof"`
 }
 
+type DdlTaskRequest_DropTriggerTask struct {
+	DropTriggerTask *DropTriggerTask `protobuf:"bytes,17,opt,name=drop_trigger_task,json=dropTriggerTask,proto3,oneof"`
+}
+
 func (*DdlTaskRequest_CreateTableTask) isDdlTaskRequest_Task() {}
 
 func (*DdlTaskRequest_DropTableTask) isDdlTaskRequest_Task() {}
@@ -1092,6 +1151,8 @@ func (*DdlTaskRequest_AlterDatabaseTask) isDdlTaskRequest_Task() {}
 
 func (*DdlTaskRequest_CreateTriggerTask) isDdlTaskRequest_Task() {}
 
+func (*DdlTaskRequest_DropTriggerTask) isDdlTaskRequest_Task() {}
+
 type DdlTaskResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1106,7 +1167,7 @@ type DdlTaskResponse struct {
 func (x *DdlTaskResponse) Reset() {
 	*x = DdlTaskResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_greptime_v1_meta_ddl_proto_msgTypes[16]
+		mi := &file_greptime_v1_meta_ddl_proto_msgTypes[17]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1119,7 +1180,7 @@ func (x *DdlTaskResponse) String() string {
 func (*DdlTaskResponse) ProtoMessage() {}
 
 func (x *DdlTaskResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_greptime_v1_meta_ddl_proto_msgTypes[16]
+	mi := &file_greptime_v1_meta_ddl_proto_msgTypes[17]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1132,7 +1193,7 @@ func (x *DdlTaskResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DdlTaskResponse.ProtoReflect.Descriptor instead.
 func (*DdlTaskResponse) Descriptor() ([]byte, []int) {
-	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{16}
+	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *DdlTaskResponse) GetHeader() *ResponseHeader {
@@ -1252,109 +1313,120 @@ var file_greptime_v1_meta_ddl_proto_rawDesc = []byte{
 	0x0b, 0x32, 0x1e, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e,
 	0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x54, 0x72, 0x69, 0x67, 0x67, 0x65, 0x72, 0x45, 0x78, 0x70,
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+	0x22, 0x52, 0x0a, 0x0f, 0x44, 0x72, 0x6f, 0x70, 0x54, 0x72, 0x69, 0x67, 0x67, 0x65, 0x72, 0x54,
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 }
 
 var (
@@ -1370,7 +1442,7 @@ func file_greptime_v1_meta_ddl_proto_rawDescGZIP() []byte {
 }
 
 var file_greptime_v1_meta_ddl_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_greptime_v1_meta_ddl_proto_msgTypes = make([]protoimpl.MessageInfo, 17)
+var file_greptime_v1_meta_ddl_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
 var file_greptime_v1_meta_ddl_proto_goTypes = []interface{}{
 	(DdlTaskType)(0),              // 0: greptime.v1.meta.DdlTaskType
 	(*CreateDatabaseTask)(nil),    // 1: greptime.v1.meta.CreateDatabaseTask
@@ -1388,69 +1460,73 @@ var file_greptime_v1_meta_ddl_proto_goTypes = []interface{}{
 	(*DropViewTask)(nil),          // 13: greptime.v1.meta.DropViewTask
 	(*AlterDatabaseTask)(nil),     // 14: greptime.v1.meta.AlterDatabaseTask
 	(*CreateTriggerTask)(nil),     // 15: greptime.v1.meta.CreateTriggerTask
-	(*DdlTaskRequest)(nil),        // 16: greptime.v1.meta.DdlTaskRequest
+	(*DropTriggerTask)(nil),       // 16: greptime.v1.meta.DropTriggerTask
-	(*DdlTaskResponse)(nil),       // 17: greptime.v1.meta.DdlTaskResponse
+	(*DdlTaskRequest)(nil),        // 17: greptime.v1.meta.DdlTaskRequest
-	(*v1.CreateDatabaseExpr)(nil), // 18: greptime.v1.CreateDatabaseExpr
+	(*DdlTaskResponse)(nil),       // 18: greptime.v1.meta.DdlTaskResponse
-	(*v1.CreateTableExpr)(nil),    // 19: greptime.v1.CreateTableExpr
+	(*v1.CreateDatabaseExpr)(nil), // 19: greptime.v1.CreateDatabaseExpr
-	(*Partition)(nil),             // 20: greptime.v1.meta.Partition
+	(*v1.CreateTableExpr)(nil),    // 20: greptime.v1.CreateTableExpr
-	(*v1.DropTableExpr)(nil),      // 21: greptime.v1.DropTableExpr
+	(*Partition)(nil),             // 21: greptime.v1.meta.Partition
-	(*v1.AlterTableExpr)(nil),     // 22: greptime.v1.AlterTableExpr
+	(*v1.DropTableExpr)(nil),      // 22: greptime.v1.DropTableExpr
-	(*v1.TruncateTableExpr)(nil),  // 23: greptime.v1.TruncateTableExpr
+	(*v1.AlterTableExpr)(nil),     // 23: greptime.v1.AlterTableExpr
-	(*v1.DropDatabaseExpr)(nil),   // 24: greptime.v1.DropDatabaseExpr
+	(*v1.TruncateTableExpr)(nil),  // 24: greptime.v1.TruncateTableExpr
-	(*v1.CreateFlowExpr)(nil),     // 25: greptime.v1.CreateFlowExpr
+	(*v1.DropDatabaseExpr)(nil),   // 25: greptime.v1.DropDatabaseExpr
-	(*v1.DropFlowExpr)(nil),       // 26: greptime.v1.DropFlowExpr
+	(*v1.CreateFlowExpr)(nil),     // 26: greptime.v1.CreateFlowExpr
-	(*v1.CreateViewExpr)(nil),     // 27: greptime.v1.CreateViewExpr
+	(*v1.DropFlowExpr)(nil),       // 27: greptime.v1.DropFlowExpr
-	(*v1.DropViewExpr)(nil),       // 28: greptime.v1.DropViewExpr
+	(*v1.CreateViewExpr)(nil),     // 28: greptime.v1.CreateViewExpr
-	(*v1.AlterDatabaseExpr)(nil),  // 29: greptime.v1.AlterDatabaseExpr
+	(*v1.DropViewExpr)(nil),       // 29: greptime.v1.DropViewExpr
-	(*v1.CreateTriggerExpr)(nil),  // 30: greptime.v1.CreateTriggerExpr
+	(*v1.AlterDatabaseExpr)(nil),  // 30: greptime.v1.AlterDatabaseExpr
-	(*RequestHeader)(nil),         // 31: greptime.v1.meta.RequestHeader
+	(*v1.CreateTriggerExpr)(nil),  // 31: greptime.v1.CreateTriggerExpr
-	(*v1.QueryContext)(nil),       // 32: greptime.v1.QueryContext
+	(*v1.DropTriggerExpr)(nil),    // 32: greptime.v1.DropTriggerExpr
-	(*ResponseHeader)(nil),        // 33: greptime.v1.meta.ResponseHeader
+	(*RequestHeader)(nil),         // 33: greptime.v1.meta.RequestHeader
-	(*ProcedureId)(nil),           // 34: greptime.v1.meta.ProcedureId
+	(*v1.QueryContext)(nil),       // 34: greptime.v1.QueryContext
-	(*v1.TableId)(nil),            // 35: greptime.v1.TableId
+	(*ResponseHeader)(nil),        // 35: greptime.v1.meta.ResponseHeader
+	(*ProcedureId)(nil),           // 36: greptime.v1.meta.ProcedureId
+	(*v1.TableId)(nil),            // 37: greptime.v1.TableId
 }
 var file_greptime_v1_meta_ddl_proto_depIdxs = []int32{
-	18, // 0: greptime.v1.meta.CreateDatabaseTask.create_database:type_name -> greptime.v1.CreateDatabaseExpr
+	19, // 0: greptime.v1.meta.CreateDatabaseTask.create_database:type_name -> greptime.v1.CreateDatabaseExpr
-	19, // 1: greptime.v1.meta.CreateTableTask.create_table:type_name -> greptime.v1.CreateTableExpr
+	20, // 1: greptime.v1.meta.CreateTableTask.create_table:type_name -> greptime.v1.CreateTableExpr
-	20, // 2: greptime.v1.meta.CreateTableTask.partitions:type_name -> greptime.v1.meta.Partition
+	21, // 2: greptime.v1.meta.CreateTableTask.partitions:type_name -> greptime.v1.meta.Partition
 	2,  // 3: greptime.v1.meta.CreateTableTasks.tasks:type_name -> greptime.v1.meta.CreateTableTask
-	21, // 4: greptime.v1.meta.DropTableTask.drop_table:type_name -> greptime.v1.DropTableExpr
+	22, // 4: greptime.v1.meta.DropTableTask.drop_table:type_name -> greptime.v1.DropTableExpr
 	4,  // 5: greptime.v1.meta.DropTableTasks.tasks:type_name -> greptime.v1.meta.DropTableTask
-	22, // 6: greptime.v1.meta.AlterTableTask.alter_table:type_name -> greptime.v1.AlterTableExpr
+	23, // 6: greptime.v1.meta.AlterTableTask.alter_table:type_name -> greptime.v1.AlterTableExpr
 	6,  // 7: greptime.v1.meta.AlterTableTasks.tasks:type_name -> greptime.v1.meta.AlterTableTask
-	23, // 8: greptime.v1.meta.TruncateTableTask.truncate_table:type_name -> greptime.v1.TruncateTableExpr
+	24, // 8: greptime.v1.meta.TruncateTableTask.truncate_table:type_name -> greptime.v1.TruncateTableExpr
-	24, // 9: greptime.v1.meta.DropDatabaseTask.drop_database:type_name -> greptime.v1.DropDatabaseExpr
+	25, // 9: greptime.v1.meta.DropDatabaseTask.drop_database:type_name -> greptime.v1.DropDatabaseExpr
-	25, // 10: greptime.v1.meta.CreateFlowTask.create_flow:type_name -> greptime.v1.CreateFlowExpr
+	26, // 10: greptime.v1.meta.CreateFlowTask.create_flow:type_name -> greptime.v1.CreateFlowExpr
-	26, // 11: greptime.v1.meta.DropFlowTask.drop_flow:type_name -> greptime.v1.DropFlowExpr
+	27, // 11: greptime.v1.meta.DropFlowTask.drop_flow:type_name -> greptime.v1.DropFlowExpr
-	27, // 12: greptime.v1.meta.CreateViewTask.create_view:type_name -> greptime.v1.CreateViewExpr
+	28, // 12: greptime.v1.meta.CreateViewTask.create_view:type_name -> greptime.v1.CreateViewExpr
-	28, // 13: greptime.v1.meta.DropViewTask.drop_view:type_name -> greptime.v1.DropViewExpr
+	29, // 13: greptime.v1.meta.DropViewTask.drop_view:type_name -> greptime.v1.DropViewExpr
-	29, // 14: greptime.v1.meta.AlterDatabaseTask.task:type_name -> greptime.v1.AlterDatabaseExpr
+	30, // 14: greptime.v1.meta.AlterDatabaseTask.task:type_name -> greptime.v1.AlterDatabaseExpr
-	30, // 15: greptime.v1.meta.CreateTriggerTask.create_trigger:type_name -> greptime.v1.CreateTriggerExpr
+	31, // 15: greptime.v1.meta.CreateTriggerTask.create_trigger:type_name -> greptime.v1.CreateTriggerExpr
-	31, // 16: greptime.v1.meta.DdlTaskRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	32, // 16: greptime.v1.meta.DropTriggerTask.drop_trigger:type_name -> greptime.v1.DropTriggerExpr
-	32, // 17: greptime.v1.meta.DdlTaskRequest.query_context:type_name -> greptime.v1.QueryContext
+	33, // 17: greptime.v1.meta.DdlTaskRequest.header:type_name -> greptime.v1.meta.RequestHeader
-	2,  // 18: greptime.v1.meta.DdlTaskRequest.create_table_task:type_name -> greptime.v1.meta.CreateTableTask
+	34, // 18: greptime.v1.meta.DdlTaskRequest.query_context:type_name -> greptime.v1.QueryContext
-	4,  // 19: greptime.v1.meta.DdlTaskRequest.drop_table_task:type_name -> greptime.v1.meta.DropTableTask
+	2,  // 19: greptime.v1.meta.DdlTaskRequest.create_table_task:type_name -> greptime.v1.meta.CreateTableTask
-	6,  // 20: greptime.v1.meta.DdlTaskRequest.alter_table_task:type_name -> greptime.v1.meta.AlterTableTask
+	4,  // 20: greptime.v1.meta.DdlTaskRequest.drop_table_task:type_name -> greptime.v1.meta.DropTableTask
-	8,  // 21: greptime.v1.meta.DdlTaskRequest.truncate_table_task:type_name -> greptime.v1.meta.TruncateTableTask
+	6,  // 21: greptime.v1.meta.DdlTaskRequest.alter_table_task:type_name -> greptime.v1.meta.AlterTableTask
-	3,  // 22: greptime.v1.meta.DdlTaskRequest.create_table_tasks:type_name -> greptime.v1.meta.CreateTableTasks
+	8,  // 22: greptime.v1.meta.DdlTaskRequest.truncate_table_task:type_name -> greptime.v1.meta.TruncateTableTask
-	5,  // 23: greptime.v1.meta.DdlTaskRequest.drop_table_tasks:type_name -> greptime.v1.meta.DropTableTasks
+	3,  // 23: greptime.v1.meta.DdlTaskRequest.create_table_tasks:type_name -> greptime.v1.meta.CreateTableTasks
-	7,  // 24: greptime.v1.meta.DdlTaskRequest.alter_table_tasks:type_name -> greptime.v1.meta.AlterTableTasks
+	5,  // 24: greptime.v1.meta.DdlTaskRequest.drop_table_tasks:type_name -> greptime.v1.meta.DropTableTasks
-	9,  // 25: greptime.v1.meta.DdlTaskRequest.drop_database_task:type_name -> greptime.v1.meta.DropDatabaseTask
+	7,  // 25: greptime.v1.meta.DdlTaskRequest.alter_table_tasks:type_name -> greptime.v1.meta.AlterTableTasks
-	1,  // 26: greptime.v1.meta.DdlTaskRequest.create_database_task:type_name -> greptime.v1.meta.CreateDatabaseTask
+	9,  // 26: greptime.v1.meta.DdlTaskRequest.drop_database_task:type_name -> greptime.v1.meta.DropDatabaseTask
-	10, // 27: greptime.v1.meta.DdlTaskRequest.create_flow_task:type_name -> greptime.v1.meta.CreateFlowTask
+	1,  // 27: greptime.v1.meta.DdlTaskRequest.create_database_task:type_name -> greptime.v1.meta.CreateDatabaseTask
-	11, // 28: greptime.v1.meta.DdlTaskRequest.drop_flow_task:type_name -> greptime.v1.meta.DropFlowTask
+	10, // 28: greptime.v1.meta.DdlTaskRequest.create_flow_task:type_name -> greptime.v1.meta.CreateFlowTask
-	12, // 29: greptime.v1.meta.DdlTaskRequest.create_view_task:type_name -> greptime.v1.meta.CreateViewTask
+	11, // 29: greptime.v1.meta.DdlTaskRequest.drop_flow_task:type_name -> greptime.v1.meta.DropFlowTask
-	13, // 30: greptime.v1.meta.DdlTaskRequest.drop_view_task:type_name -> greptime.v1.meta.DropViewTask
+	12, // 30: greptime.v1.meta.DdlTaskRequest.create_view_task:type_name -> greptime.v1.meta.CreateViewTask
-	14, // 31: greptime.v1.meta.DdlTaskRequest.alter_database_task:type_name -> greptime.v1.meta.AlterDatabaseTask
+	13, // 31: greptime.v1.meta.DdlTaskRequest.drop_view_task:type_name -> greptime.v1.meta.DropViewTask
-	15, // 32: greptime.v1.meta.DdlTaskRequest.create_trigger_task:type_name -> greptime.v1.meta.CreateTriggerTask
+	14, // 32: greptime.v1.meta.DdlTaskRequest.alter_database_task:type_name -> greptime.v1.meta.AlterDatabaseTask
-	33, // 33: greptime.v1.meta.DdlTaskResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	15, // 33: greptime.v1.meta.DdlTaskRequest.create_trigger_task:type_name -> greptime.v1.meta.CreateTriggerTask
-	34, // 34: greptime.v1.meta.DdlTaskResponse.pid:type_name -> greptime.v1.meta.ProcedureId
+	16, // 34: greptime.v1.meta.DdlTaskRequest.drop_trigger_task:type_name -> greptime.v1.meta.DropTriggerTask
-	35, // 35: greptime.v1.meta.DdlTaskResponse.table_ids:type_name -> greptime.v1.TableId
+	35, // 35: greptime.v1.meta.DdlTaskResponse.header:type_name -> greptime.v1.meta.ResponseHeader
-	36, // [36:36] is the sub-list for method output_type
+	36, // 36: greptime.v1.meta.DdlTaskResponse.pid:type_name -> greptime.v1.meta.ProcedureId
-	36, // [36:36] is the sub-list for method input_type
+	37, // 37: greptime.v1.meta.DdlTaskResponse.table_ids:type_name -> greptime.v1.TableId
-	36, // [36:36] is the sub-list for extension type_name
+	38, // [38:38] is the sub-list for method output_type
-	36, // [36:36] is the sub-list for extension extendee
+	38, // [38:38] is the sub-list for method input_type
-	0,  // [0:36] is the sub-list for field type_name
+	38, // [38:38] is the sub-list for extension type_name
+	38, // [38:38] is the sub-list for extension extendee
+	0,  // [0:38] is the sub-list for field type_name
 }
 
 func init() { file_greptime_v1_meta_ddl_proto_init() }
@@ -1642,7 +1718,7 @@ func file_greptime_v1_meta_ddl_proto_init() {
 			}
 		}
 		file_greptime_v1_meta_ddl_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DdlTaskRequest); i {
+			switch v := v.(*DropTriggerTask); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1654,6 +1730,18 @@ func file_greptime_v1_meta_ddl_proto_init() {
 			}
 		}
 		file_greptime_v1_meta_ddl_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DdlTaskRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_greptime_v1_meta_ddl_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DdlTaskResponse); i {
 			case 0:
 				return &v.state
@@ -1666,7 +1754,7 @@ func file_greptime_v1_meta_ddl_proto_init() {
 			}
 		}
 	}
-	file_greptime_v1_meta_ddl_proto_msgTypes[15].OneofWrappers = []interface{}{
+	file_greptime_v1_meta_ddl_proto_msgTypes[16].OneofWrappers = []interface{}{
 		(*DdlTaskRequest_CreateTableTask)(nil),
 		(*DdlTaskRequest_DropTableTask)(nil),
 		(*DdlTaskRequest_AlterTableTask)(nil),
@@ -1682,6 +1770,7 @@ func file_greptime_v1_meta_ddl_proto_init() {
 		(*DdlTaskRequest_DropViewTask)(nil),
 		(*DdlTaskRequest_AlterDatabaseTask)(nil),
 		(*DdlTaskRequest_CreateTriggerTask)(nil),
+		(*DdlTaskRequest_DropTriggerTask)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -1689,7 +1778,7 @@ func file_greptime_v1_meta_ddl_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_greptime_v1_meta_ddl_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   17,
+			NumMessages:   18,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

java/src/main/java/io/greptime/v1/Ddl.java

@@ -44671,6 +44671,797 @@ java.lang.String defaultValue);
 
   }
 
+  public interface DropTriggerExprOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.DropTriggerExpr)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>string catalog_name = 1;</code>
+     * @return The catalogName.
+     */
+    java.lang.String getCatalogName();
+    /**
+     * <code>string catalog_name = 1;</code>
+     * @return The bytes for catalogName.
+     */
+    com.google.protobuf.ByteString
+        getCatalogNameBytes();
+
+    /**
+     * <code>string trigger_name = 2;</code>
+     * @return The triggerName.
+     */
+    java.lang.String getTriggerName();
+    /**
+     * <code>string trigger_name = 2;</code>
+     * @return The bytes for triggerName.
+     */
+    com.google.protobuf.ByteString
+        getTriggerNameBytes();
+
+    /**
+     * <code>bool drop_if_exists = 3;</code>
+     * @return The dropIfExists.
+     */
+    boolean getDropIfExists();
+  }
+  /**
+   * Protobuf type {@code greptime.v1.DropTriggerExpr}
+   */
+  public static final class DropTriggerExpr extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:greptime.v1.DropTriggerExpr)
+      DropTriggerExprOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use DropTriggerExpr.newBuilder() to construct.
+    private DropTriggerExpr(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private DropTriggerExpr() {
+      catalogName_ = "";
+      triggerName_ = "";
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new DropTriggerExpr();
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private DropTriggerExpr(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 10: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              catalogName_ = s;
+              break;
+            }
+            case 18: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              triggerName_ = s;
+              break;
+            }
+            case 24: {
+
+              dropIfExists_ = input.readBool();
+              break;
+            }
+            default: {
+              if (!parseUnknownField(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return io.greptime.v1.Ddl.internal_static_greptime_v1_DropTriggerExpr_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return io.greptime.v1.Ddl.internal_static_greptime_v1_DropTriggerExpr_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              io.greptime.v1.Ddl.DropTriggerExpr.class, io.greptime.v1.Ddl.DropTriggerExpr.Builder.class);
+    }
+
+    public static final int CATALOG_NAME_FIELD_NUMBER = 1;
+    private volatile java.lang.Object catalogName_;
+    /**
+     * <code>string catalog_name = 1;</code>
+     * @return The catalogName.
+     */
+    @java.lang.Override
+    public java.lang.String getCatalogName() {
+      java.lang.Object ref = catalogName_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        catalogName_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string catalog_name = 1;</code>
+     * @return The bytes for catalogName.
+     */
+    @java.lang.Override
+    public com.google.protobuf.ByteString
+        getCatalogNameBytes() {
+      java.lang.Object ref = catalogName_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        catalogName_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int TRIGGER_NAME_FIELD_NUMBER = 2;
+    private volatile java.lang.Object triggerName_;
+    /**
+     * <code>string trigger_name = 2;</code>
+     * @return The triggerName.
+     */
+    @java.lang.Override
+    public java.lang.String getTriggerName() {
+      java.lang.Object ref = triggerName_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        triggerName_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string trigger_name = 2;</code>
+     * @return The bytes for triggerName.
+     */
+    @java.lang.Override
+    public com.google.protobuf.ByteString
+        getTriggerNameBytes() {
+      java.lang.Object ref = triggerName_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        triggerName_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int DROP_IF_EXISTS_FIELD_NUMBER = 3;
+    private boolean dropIfExists_;
+    /**
+     * <code>bool drop_if_exists = 3;</code>
+     * @return The dropIfExists.
+     */
+    @java.lang.Override
+    public boolean getDropIfExists() {
+      return dropIfExists_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(catalogName_)) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, catalogName_);
+      }
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(triggerName_)) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, triggerName_);
+      }
+      if (dropIfExists_ != false) {
+        output.writeBool(3, dropIfExists_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(catalogName_)) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, catalogName_);
+      }
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(triggerName_)) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, triggerName_);
+      }
+      if (dropIfExists_ != false) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBoolSize(3, dropIfExists_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof io.greptime.v1.Ddl.DropTriggerExpr)) {
+        return super.equals(obj);
+      }
+      io.greptime.v1.Ddl.DropTriggerExpr other = (io.greptime.v1.Ddl.DropTriggerExpr) obj;
+
+      if (!getCatalogName()
+          .equals(other.getCatalogName())) return false;
+      if (!getTriggerName()
+          .equals(other.getTriggerName())) return false;
+      if (getDropIfExists()
+          != other.getDropIfExists()) return false;
+      if (!unknownFields.equals(other.unknownFields)) return false;
+      return true;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + CATALOG_NAME_FIELD_NUMBER;
+      hash = (53 * hash) + getCatalogName().hashCode();
+      hash = (37 * hash) + TRIGGER_NAME_FIELD_NUMBER;
+      hash = (53 * hash) + getTriggerName().hashCode();
+      hash = (37 * hash) + DROP_IF_EXISTS_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
+          getDropIfExists());
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static io.greptime.v1.Ddl.DropTriggerExpr parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(io.greptime.v1.Ddl.DropTriggerExpr prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code greptime.v1.DropTriggerExpr}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:greptime.v1.DropTriggerExpr)
+        io.greptime.v1.Ddl.DropTriggerExprOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropTriggerExpr_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropTriggerExpr_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                io.greptime.v1.Ddl.DropTriggerExpr.class, io.greptime.v1.Ddl.DropTriggerExpr.Builder.class);
+      }
+
+      // Construct using io.greptime.v1.Ddl.DropTriggerExpr.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+        }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        catalogName_ = "";
+
+        triggerName_ = "";
+
+        dropIfExists_ = false;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropTriggerExpr_descriptor;
+      }
+
+      @java.lang.Override
+      public io.greptime.v1.Ddl.DropTriggerExpr getDefaultInstanceForType() {
+        return io.greptime.v1.Ddl.DropTriggerExpr.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public io.greptime.v1.Ddl.DropTriggerExpr build() {
+        io.greptime.v1.Ddl.DropTriggerExpr result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public io.greptime.v1.Ddl.DropTriggerExpr buildPartial() {
+        io.greptime.v1.Ddl.DropTriggerExpr result = new io.greptime.v1.Ddl.DropTriggerExpr(this);
+        result.catalogName_ = catalogName_;
+        result.triggerName_ = triggerName_;
+        result.dropIfExists_ = dropIfExists_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.greptime.v1.Ddl.DropTriggerExpr) {
+          return mergeFrom((io.greptime.v1.Ddl.DropTriggerExpr)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.greptime.v1.Ddl.DropTriggerExpr other) {
+        if (other == io.greptime.v1.Ddl.DropTriggerExpr.getDefaultInstance()) return this;
+        if (!other.getCatalogName().isEmpty()) {
+          catalogName_ = other.catalogName_;
+          onChanged();
+        }
+        if (!other.getTriggerName().isEmpty()) {
+          triggerName_ = other.triggerName_;
+          onChanged();
+        }
+        if (other.getDropIfExists() != false) {
+          setDropIfExists(other.getDropIfExists());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.greptime.v1.Ddl.DropTriggerExpr parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.greptime.v1.Ddl.DropTriggerExpr) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private java.lang.Object catalogName_ = "";
+      /**
+       * <code>string catalog_name = 1;</code>
+       * @return The catalogName.
+       */
+      public java.lang.String getCatalogName() {
+        java.lang.Object ref = catalogName_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          catalogName_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string catalog_name = 1;</code>
+       * @return The bytes for catalogName.
+       */
+      public com.google.protobuf.ByteString
+          getCatalogNameBytes() {
+        java.lang.Object ref = catalogName_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          catalogName_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string catalog_name = 1;</code>
+       * @param value The catalogName to set.
+       * @return This builder for chaining.
+       */
+      public Builder setCatalogName(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        catalogName_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string catalog_name = 1;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearCatalogName() {
+        
+        catalogName_ = getDefaultInstance().getCatalogName();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string catalog_name = 1;</code>
+       * @param value The bytes for catalogName to set.
+       * @return This builder for chaining.
+       */
+      public Builder setCatalogNameBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        catalogName_ = value;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object triggerName_ = "";
+      /**
+       * <code>string trigger_name = 2;</code>
+       * @return The triggerName.
+       */
+      public java.lang.String getTriggerName() {
+        java.lang.Object ref = triggerName_;
+        if (!(ref instanceof java.lang.String)) {
+          com.google.protobuf.ByteString bs =
+              (com.google.protobuf.ByteString) ref;
+          java.lang.String s = bs.toStringUtf8();
+          triggerName_ = s;
+          return s;
+        } else {
+          return (java.lang.String) ref;
+        }
+      }
+      /**
+       * <code>string trigger_name = 2;</code>
+       * @return The bytes for triggerName.
+       */
+      public com.google.protobuf.ByteString
+          getTriggerNameBytes() {
+        java.lang.Object ref = triggerName_;
+        if (ref instanceof String) {
+          com.google.protobuf.ByteString b = 
+              com.google.protobuf.ByteString.copyFromUtf8(
+                  (java.lang.String) ref);
+          triggerName_ = b;
+          return b;
+        } else {
+          return (com.google.protobuf.ByteString) ref;
+        }
+      }
+      /**
+       * <code>string trigger_name = 2;</code>
+       * @param value The triggerName to set.
+       * @return This builder for chaining.
+       */
+      public Builder setTriggerName(
+          java.lang.String value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        triggerName_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string trigger_name = 2;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearTriggerName() {
+        
+        triggerName_ = getDefaultInstance().getTriggerName();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string trigger_name = 2;</code>
+       * @param value The bytes for triggerName to set.
+       * @return This builder for chaining.
+       */
+      public Builder setTriggerNameBytes(
+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  checkByteStringIsUtf8(value);
+        
+        triggerName_ = value;
+        onChanged();
+        return this;
+      }
+
+      private boolean dropIfExists_ ;
+      /**
+       * <code>bool drop_if_exists = 3;</code>
+       * @return The dropIfExists.
+       */
+      @java.lang.Override
+      public boolean getDropIfExists() {
+        return dropIfExists_;
+      }
+      /**
+       * <code>bool drop_if_exists = 3;</code>
+       * @param value The dropIfExists to set.
+       * @return This builder for chaining.
+       */
+      public Builder setDropIfExists(boolean value) {
+        
+        dropIfExists_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>bool drop_if_exists = 3;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearDropIfExists() {
+        
+        dropIfExists_ = false;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:greptime.v1.DropTriggerExpr)
+    }
+
+    // @@protoc_insertion_point(class_scope:greptime.v1.DropTriggerExpr)
+    private static final io.greptime.v1.Ddl.DropTriggerExpr DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new io.greptime.v1.Ddl.DropTriggerExpr();
+    }
+
+    public static io.greptime.v1.Ddl.DropTriggerExpr getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<DropTriggerExpr>
+        PARSER = new com.google.protobuf.AbstractParser<DropTriggerExpr>() {
+      @java.lang.Override
+      public DropTriggerExpr parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new DropTriggerExpr(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<DropTriggerExpr> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<DropTriggerExpr> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public io.greptime.v1.Ddl.DropTriggerExpr getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_DdlRequest_descriptor;
   private static final 
@@ -44906,6 +45697,11 @@ java.lang.String defaultValue);
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_WebhookOptions_OptsEntry_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_greptime_v1_DropTriggerExpr_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_greptime_v1_DropTriggerExpr_fieldAccessorTable;
 
   public static com.google.protobuf.Descriptors.FileDescriptor
       getDescriptor() {
@@ -45067,12 +45863,14 @@ java.lang.String defaultValue);
       "annel_type\"\177\n\016WebhookOptions\022\013\n\003url\030\001 \001(" +
       "\t\0223\n\004opts\030\002 \003(\0132%.greptime.v1.WebhookOpt" +
       "ions.OptsEntry\032+\n\tOptsEntry\022\013\n\003key\030\001 \001(\t" +
-      "\022\r\n\005value\030\002 \001(\t:\0028\001*$\n\010Analyzer\022\013\n\007ENGLI" +
+      "\022\r\n\005value\030\002 \001(\t:\0028\001\"U\n\017DropTriggerExpr\022\024" +
-      "SH\020\000\022\013\n\007CHINESE\020\001*)\n\017FulltextBackend\022\013\n\007" +
+      "\n\014catalog_name\030\001 \001(\t\022\024\n\014trigger_name\030\002 \001" +
-      "TANTIVY\020\000\022\t\n\005BLOOM\020\001*%\n\021SkippingIndexTyp" +
+      "(\t\022\026\n\016drop_if_exists\030\003 \001(\010*$\n\010Analyzer\022\013" +
-      "e\022\020\n\014BLOOM_FILTER\020\000BL\n\016io.greptime.v1B\003D" +
+      "\n\007ENGLISH\020\000\022\013\n\007CHINESE\020\001*)\n\017FulltextBack" +
-      "dlZ5github.com/GreptimeTeam/greptime-pro" +
+      "end\022\013\n\007TANTIVY\020\000\022\t\n\005BLOOM\020\001*%\n\021SkippingI" +
-      "to/go/greptime/v1b\006proto3"
+      "ndexType\022\020\n\014BLOOM_FILTER\020\000BL\n\016io.greptim" +
+      "e.v1B\003DdlZ5github.com/GreptimeTeam/grept" +
+      "ime-proto/go/greptime/v1b\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -45361,6 +46159,12 @@ java.lang.String defaultValue);
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_WebhookOptions_OptsEntry_descriptor,
         new java.lang.String[] { "Key", "Value", });
+    internal_static_greptime_v1_DropTriggerExpr_descriptor =
+      getDescriptor().getMessageTypes().get(41);
+    internal_static_greptime_v1_DropTriggerExpr_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_greptime_v1_DropTriggerExpr_descriptor,
+        new java.lang.String[] { "CatalogName", "TriggerName", "DropIfExists", });
     io.greptime.v1.Common.getDescriptor();
   }
 

proto/greptime/v1/ddl.proto

@@ -326,3 +326,9 @@ message WebhookOptions {
     string url = 1;
     map<string, string> opts = 2;
 }
+
+message DropTriggerExpr {
+    string catalog_name = 1;
+    string trigger_name = 2;
+    bool drop_if_exists = 3;
+}

proto/greptime/v1/meta/ddl.proto

@@ -88,6 +88,10 @@ message CreateTriggerTask {
     CreateTriggerExpr create_trigger = 1;
 }
 
+message DropTriggerTask {
+    DropTriggerExpr drop_trigger = 1;
+}
+
 message DdlTaskRequest {
     RequestHeader header = 1;
     QueryContext query_context = 64;
@@ -108,6 +112,7 @@ message DdlTaskRequest {
         DropViewTask drop_view_task = 14;
         AlterDatabaseTask alter_database_task = 15;
         CreateTriggerTask create_trigger_task = 16;
+        DropTriggerTask drop_trigger_task = 17;
      }
 }