IS_FREE_LOCK
You are viewing an old version of this article. View
the current version here.
Syntax
IS_FREE_LOCK(str)
Description
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, like an empty string or NULL). str is case insensitive.
If the metadata_lock_info plugin is installed, the Information Schema metadata_lock_info table contains information about locks of this kind (as well as metadata locks).
See also
Comments
Comments loading...
Content reproduced on this site is the property of its respective owners,
and this content is not reviewed in advance by MariaDB. The views, information and opinions
expressed by this content do not necessarily represent those of MariaDB or any other party.
