IS_FREE_LOCK(str): Checks whether the lock named str is free to use (that is, not locked). : IS_FREE_LOCK « Miscellaneous Functions « MySQL Tutorial






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  2. Miscellaneous Functions
  3. IS_FREE_LOCK

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).