May 2005
Intermediate to advanced
352 pages
14h 39m
English
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Name
RELEASE_LOCK( )
Synopsis
RELEASE_LOCK(string)This function releases a lock created by GET_LOCK(). The name of the lock is given in parentheses. If
successful, 1 is returned; if unsuccessful, 0 is returned. If the
lock specified does not exist, NULL is returned.
SELECT RELEASE_LOCK('my_lock');
+-------------------------+
| RELEASE_LOCK('my_lock') |
+-------------------------+
| 1 |
+-------------------------+As an alternative to using
SELECT, you can use DO; no
results are returned.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.