BEGIN IF (@sys.debug IS NULL) THEN SET @sys.debug = sys.sys_get_config('debug', 'OFF'); END IF;  IF (in_query IS NULL OR LENGTH(in_query) < 4) THEN SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = "The @sys.execute_prepared_stmt.sql must contain a query"; END IF;  SET @sys.execute_prepared_stmt.sql = in_query;  IF (@sys.debug = 'ON') THEN SELECT @sys.execute_prepared_stmt.sql AS 'Debug'; END IF; PREPARE sys_execute_prepared_stmt FROM @sys.execute_prepared_stmt.sql; EXECUTE sys_execute_prepared_stmt; DEALLOCATE PREPARE sys_execute_prepared_stmt;  SET @sys.execute_prepared_stmt.sql = NULL; END