Add tag for database object

src/backend/commands/dbcommands.c

@@ -54,6 +54,7 @@
 #include "commands/defrem.h"
 #include "commands/seclabel.h"
 #include "commands/tablespace.h"
+#include "commands/tag.h"
 #include "mb/pg_wchar.h"
 #include "miscadmin.h"
 #include "pgstat.h"
@@ -583,6 +584,18 @@ createdb(ParseState *pstate, const CreatedbStmt *stmt)
 			RememberAssignedOidForDatabase(dbname, dboid);
 	}
 
+	if (stmt->tags)
+	{
+		ListCell	*cell;
+		foreach(cell, stmt->tags)
+		{
+			DefElem		*def;
+
+			def = lfirst(cell);
+			AddTagForObject(def);
+		}
+	}
+
 	/*
 	 * Insert a new tuple into pg_database.  This establishes our ownership of
 	 * the new database name (anyone else trying to insert the same name will

src/backend/commands/tag.c

@@ -428,6 +428,20 @@ RenameTag(const char *oldname, const char *newname)
 	return address;
 }
 
+/*
+ * Add tag
+ *
+ * Add tag for database object such as database, warehouse, table etc.
+ */
+void
+AddTagForObject(DefElem *def)
+{
+	return;
+}
+
+/*
+ * Transform tag allowed values to datum.
+ */
 static Datum
 transformTagAllowedValues(int action, Datum oldvalues,
 						  List *allowed_values)
@@ -489,6 +503,9 @@ transformTagAllowedValues(int action, Datum oldvalues,
 	return result;
 }
 
+/*
+ * Untranform tag values from datum to list.
+ */
 static List *
 untransformTagValues(Datum allowed_values)
 {
@@ -521,6 +538,9 @@ untransformTagValues(Datum allowed_values)
 	return result;
 }
 
+/*
+ * Get array datum from allowed_values list.
+ */
 static Datum
 valueListToArray(List *allowed_values)
 {

src/backend/parser/gram.y

@@ -2501,7 +2501,6 @@ OptTagValuesList:
 
 OptTagOptList:
 		TAG '(' TagOptList ')'                          { $$ = $3; }
-		| WITH TAG '(' TagOptList ')'                   { $$ = $4; }
 		| /*EMPTY*/                                     { $$ = NIL; }
 	;
 

src/include/commands/tag.h

@@ -18,6 +18,7 @@
 extern Oid CreateTag(CreateTagStmt *stmt);
 extern ObjectAddress AlterTag(AlterTagStmt *stmt);
 extern void DropTag(DropTagStmt *stmt);
+extern void AddTagForObject(DefElem *def);
 extern Oid get_tag_oid(const char *tagname, bool missing_ok);
 extern ObjectAddress RenameTag(const char *oldname, const char *newname);