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Re: MySqlPlugin
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Re: MySqlPlugin

  • Subject: Re: MySqlPlugin
  • From: Jesse Tayler <email@hidden>
  • Date: Fri, 07 Mar 2014 12:15:21 -0500
did you check to make sure your database is using the index fetch plan you expect?

I recall with MySQL sometimes indexes would fail but there would be no indication until I actually reviewed the fetch internals…

something chuck would know off the top of his head I’m sure…




On Mar 7, 2014, at 12:02 PM, Robin Smith <email@hidden> wrote:

Hi All

We have been experiencing some performace issues with our DB queries that we have narrowed down to the "limitClause" applied to sql queries. It seems that out of the box MySQL uses no indexes when supplied with a LIMIT clause.

Taking this into consideration we were wondering if anything like batch fetch iterator rely on the limit clause being applied to queries or if we could safely remove (or add switch to) this part of _MySqlPlugin.

Thanks

Robin

--
Robin Smith
Engineering Team Leader  BEng (Hons) MBCS

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