MySQL Tutorial/Miscellaneous Functions/IS FREE LOCK
Версия от 13:44, 26 мая 2010; (обсуждение)
IS_FREE_LOCK(str): Checks whether the lock named str is free to use (that is, not locked).
Returns 1 if the lock is free (no one is using the lock), 0 if the lock is in use, and NULL if an error occurs (such as an incorrect argument).
22. 6. IS_FREE_LOCK 22. 6. 1. IS_FREE_LOCK(str): Checks whether the lock named str is free to use (that is, not locked).
