RELEASE_LOCK(str): Releases the lock named by the string str that was obtained with GET_LOCK(). : RELEASE_LOCK « Miscellaneous Functions « MySQL Tutorial






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  3. RELEASE_LOCK

Returns 1 if the lock was released, 0 if the lock was not established by this thread (in which case the lock is not released), and NULL if the named lock did not exist.

22.8.RELEASE_LOCK
22.8.1.RELEASE_LOCK(str): Releases the lock named by the string str that was obtained with GET_LOCK().