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Re: GET_LOCK/RELEASE_LOCK - Active Lock Holders
Posted by: Van Stokes
Date: March 01, 2009 01:25AM

Just in case anyone else stumbles onto this post like I did. Here is what I found:

"IS_USED_LOCK() checks if the lock is used and returns the connection identifier of the client that holds the lock otherwise 0. NULL is used for error cases."

Source: http://optimmysql.blogspot.com/2007/11/getlock-family.html

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