Použijte připravený příkaz:
mysql> SET @sql = CONCAT("SELECT ", (SELECT "NOW()")); Query OK, 0 rows affected (0.00 sec) mysql> SELECT @sql; +--------------+ | @sql | +--------------+ | SELECT NOW() | +--------------+ 1 row in set (0.00 sec) mysql> PREPARE stmt FROM @sql; Query OK, 0 rows affected (0.00 sec) Statement prepared mysql> EXECUTE stmt; +---------------------+ | NOW() | +---------------------+ | 2009-04-06 23:08:31 | +---------------------+ 1 row in set (0.00 sec)