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Message #04627
Re: request for a feature -- LIMIT_ROWS_EXAMINED
On Mon, Mar 12, 2012 at 1:16 PM, Timour Katchaounov
<timour@xxxxxxxxxxxxxxxx> wrote:
> Hello Mark!
>
> In summary, the feature is ready. It has been reviewed by Monty, and
> tested by Elena via the random query generator. All known bugs have been
> fixed. The implementation turned out to be a lot more tricky than
> initially expected. I hope the result is satisfactory. These are
> the main changes/highlights since our last email exchange:
Thank you.
> - The implementation still allows the query engine to have what I call
> "momentum". In various cases it is possible that the query engine
> examines even an order of magnitude more rows than the give row limit.
This is OK for us. We won't be using it in those cases.
> Given that we cannot push this feature into 5.3 (it is GA), an important
> question is whether I should continue maintaining the 5.3 version of the
> feature in addition to the released version in 5.5.
You don't need to maintain the 5.3 version.
--
Mark Callaghan
mdcallag@xxxxxxxxx
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