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From:Olav Mørkrid Date:March 19 2010 8:14am
Subject:Slow queries when using left join
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Dear MySQL forum.

I have performance problems when using "left join x" combined with
"where x.y is null", in particularily when combining three tables this
way.

Please contact me by e-mail if you are familiar with these issues and
know how to eliminate slow queries.

I would really appreciate your help.
Thread
Slow queries when using left joinOlav Mørkrid19 Mar
  • Re: Slow queries when using left joinJohan De Meersman19 Mar