feat: alter database ttl (#203)

* feat: alter database ttl

* chore: add ddl task

* chore: single task

* chore: remove options

* feat: add unset database options

---------

Co-authored-by: CookiePieWw <profsyb@gmail.com>

proto/greptime/v1/ddl.proto

@@ -30,13 +30,14 @@ message DdlRequest {
   oneof expr {
     CreateDatabaseExpr create_database = 1;
     CreateTableExpr create_table = 2;
-    AlterExpr alter = 3;
+    AlterTableExpr alter_table = 3;
     DropTableExpr drop_table = 4;
     TruncateTableExpr truncate_table = 7;
     CreateFlowExpr create_flow = 8;
     DropFlowExpr drop_flow = 9;
     CreateViewExpr create_view = 10;
     DropViewExpr drop_view = 11;
+    AlterDatabaseExpr alter_database = 12;
   }
 }
 
@@ -100,7 +101,7 @@ message CreateTableExpr {
   string engine = 12;
 }
 
-message AlterExpr {
+message AlterTableExpr {
   string catalog_name = 1;
   string schema_name = 2;
   string table_name = 3;
@@ -163,15 +164,15 @@ message ModifyColumnType {
   ColumnDataTypeExtension target_type_extension = 3;
 }
 
-message SetTableOptions {
-    repeated TableOption table_options = 1;
-}
-
-message TableOption {
+message Option {
   string key = 1;
   string value = 2;
 }
 
+message SetTableOptions {
+    repeated Option table_options = 1;
+}
+
 message UnsetTableOptions {
     repeated string keys = 1;
 }
@@ -221,3 +222,20 @@ message SetColumnFulltext {
 message UnsetColumnFulltext {
     string column_name = 1;
 }
+
+message AlterDatabaseExpr {
+    string catalog_name = 1;
+    string schema_name = 2;
+    oneof kind {
+        SetDatabaseOptions set_database_options = 3;
+        UnsetDatabaseOptions unset_database_options = 4;
+    }
+}
+
+message SetDatabaseOptions {
+    repeated Option set_database_options = 1;
+}
+
+message UnsetDatabaseOptions {
+    repeated string keys = 1;
+}

proto/greptime/v1/meta/ddl.proto

@@ -47,7 +47,7 @@ message DropTableTask{
 message DropTableTasks { repeated DropTableTask tasks = 1; }
 
 message AlterTableTask{
-    AlterExpr alter_table = 1;
+    AlterTableExpr alter_table = 1;
 }
 
 message AlterTableTasks { repeated AlterTableTask tasks = 1; }
@@ -79,6 +79,11 @@ message DropViewTask {
     DropViewExpr drop_view = 1;
 }
 
+// Alter database tasks
+message AlterDatabaseTask {
+    AlterDatabaseExpr task = 1;
+}
+
 message DdlTaskRequest {
     RequestHeader header = 1;
     QueryContext query_context = 64;
@@ -97,6 +102,7 @@ message DdlTaskRequest {
         DropFlowTask drop_flow_task = 12;
         CreateViewTask create_view_task = 13;
         DropViewTask drop_view_task = 14;
+        AlterDatabaseTask alter_database_task = 15;
      }
 }