Adds distributed check for rename and alter db

src/backend/distributed/commands/database.c

@@ -231,15 +231,18 @@ List *
 PreprocessAlterDatabaseStmt(Node *node, const char *queryString,
 							ProcessUtilityContext processUtilityContext)
 {
-	if (!ShouldPropagate())
+	bool missingOk = false;
+	AlterDatabaseStmt *stmt = castNode(AlterDatabaseStmt, node);
+	ObjectAddress *dbAddress = GetDatabaseAddressFromDatabaseName(stmt->dbname,
+																  missingOk);
+
+	if (!ShouldPropagate() || !IsAnyObjectDistributed(list_make1(dbAddress)))
 	{
 		return NIL;
 	}
 
 	EnsureCoordinator();
 
-	AlterDatabaseStmt *stmt = castNode(AlterDatabaseStmt, node);
-
 	char *sql = DeparseTreeNode((Node *) stmt);
 
 	List *commands = list_make3(DISABLE_DDL_PROPAGATION,
@@ -305,15 +308,18 @@ PreprocessAlterDatabaseRefreshCollStmt(Node *node, const char *queryString,
 List *
 PostprocessAlterDatabaseRenameStmt(Node *node, const char *queryString)
 {
-	if (!ShouldPropagate())
+	bool missingOk = false;
+	RenameStmt *stmt = castNode(RenameStmt, node);
+	ObjectAddress *dbAddress = GetDatabaseAddressFromDatabaseName(stmt->newname,
+																  missingOk);
+
+	if (!ShouldPropagate() || !IsAnyObjectDistributed(list_make1(dbAddress)))
 	{
 		return NIL;
 	}
 
 	EnsureCoordinator();
 
-	RenameStmt *stmt = castNode(RenameStmt, node);
-
 	char *sql = DeparseTreeNode((Node *) stmt);
 
 	List *commands = list_make3(DISABLE_DDL_PROPAGATION,

src/test/regress/expected/alter_database_propagation.out

@@ -178,6 +178,16 @@ NOTICE:  issuing ALTER DATABASE regression2 RENAME TO regression3
 DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
 NOTICE:  issuing ALTER DATABASE regression2 RENAME TO regression3
 DETAIL:  on server postgres@localhost:xxxxx connectionId: xxxxxxx
+-- check that the local database rename and alter comnmand is not propagated
+set citus.enable_create_database_propagation=off;
+CREATE database local_regression;
+NOTICE:  Citus partially supports CREATE DATABASE for distributed databases
+DETAIL:  Citus does not propagate CREATE DATABASE command to workers
+HINT:  You can manually create a database and its extensions on workers.
+alter DATABASE local_regression with CONNECTION LIMIT 100;
+alter DATABASE local_regression rename to local_regression2;
+drop database local_regression2;
+set citus.enable_create_database_propagation=on;
 drop database regression3;
 create database regression4;
 SELECT result FROM run_command_on_all_nodes(

src/test/regress/sql/alter_database_propagation.sql

@@ -76,6 +76,16 @@ alter database regression2 set TABLESPACE alter_db_tablespace;
 set citus.enable_create_database_propagation=on;
 alter database regression2 rename to regression3;
 
+-- check that the local database rename and alter comnmand is not propagated
+set citus.enable_create_database_propagation=off;
+CREATE database local_regression;
+
+alter DATABASE local_regression with CONNECTION LIMIT 100;
+alter DATABASE local_regression rename to local_regression2;
+drop database local_regression2;
+
+set citus.enable_create_database_propagation=on;
+
 drop database regression3;
 
 create database regression4;