We're trying to manage and tune our MySql.
One alert we're getting in phpMyAdmin is this:
Select full joinDocumentation 421 The number of joins that do not use indexes. If this value is not 0, you should carefully check the indexes of your tables.
Apparently, there are joins that are not using indexes. These have run 421 times since rebooting mysql (last reboot was only hours ago). I've hunted through our code, and run
EXPLAIN on dozens and dozens queries trying to identify the culprit, but to no success.
Is there a way I can identify the queries that are triggering this alert so I can attempt to change or improve them?
Thanks in advance.