feat: alter inverted index (#204)

proto/greptime/v1/ddl.proto

@@ -111,9 +111,23 @@ message AlterTableExpr {
     RenameTable rename_table = 6;
     ModifyColumnTypes modify_column_types = 7;
     SetTableOptions set_table_options = 8;
-    SetColumnFulltext set_column_fulltext = 9;
-    UnsetColumnFulltext unset_column_fulltext = 10;
     UnsetTableOptions unset_table_options = 11;
+    SetIndex set_index = 12;
+    UnsetIndex unset_index = 13;
+  }
+}
+
+message SetIndex {
+  oneof options {
+    SetFulltext fulltext = 1;
+    SetInverted inverted = 2;
+  }
+}
+
+message UnsetIndex {
+  oneof options {
+    UnsetFulltext fulltext = 1;
+    UnsetInverted inverted = 2;
   }
 }
 
@@ -215,14 +229,22 @@ enum Analyzer {
     CHINESE = 1;
 }
 
-message SetColumnFulltext {
+message SetFulltext {
     string column_name = 1;
     bool enable = 2;
     Analyzer analyzer = 3;
     bool case_sensitive = 4;
 }
 
-message UnsetColumnFulltext {
+message UnsetFulltext {
+    string column_name = 1;
+}
+
+message SetInverted {
+    string column_name = 1;
+}
+
+message UnsetInverted {
     string column_name = 1;
 }