# Page Not Found

The URL `ref/xpand/functions/IS_FREE_LOCK` does not exist.

You might be looking for one of these pages:
- [IS_FREE_LOCK](https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_free_lock.md)
- [IS_USED_LOCK](https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/is_used_lock.md)
- [RELEASE_LOCK](https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/release_lock.md)
- [GET_LOCK](https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/get_lock.md)
- [FLOOR](https://mariadb.com/docs/server/reference/sql-functions/numeric-functions/floor.md)

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