How many rows will be locked by SELECT … ORDER BY xxx LIMIT 1 FOR UPDATE?

Question

I have a query with the following structure:

SELECT ..... WHERE status = \'QUEUED\' ORDER BY position ASC LIMIT 1 FOR UPDATE;

It\'s a singl

Answer 1

There is a bug in some versions of MySQL: #67745 Too much row locks when using SELECT for UPDATE, LIMIT and ORDER BY.

Version: 5.5.28, 5.5.30, 5.7.1

Same bug on my local mysql 5.5.25 win64.