Re: BUG #13464: Optimizer fails to use partial index on boolean when selected via "IS" operator.

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От Tom Lane
Тема Re: BUG #13464: Optimizer fails to use partial index on boolean when selected via "IS" operator.
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Msg-id 17190.1435105732@sss.pgh.pa.us
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Ответ на BUG #13464: Optimizer fails to use partial index on boolean when selected via "IS" operator.  (corey.huinker@gmail.com)
Ответы Re: BUG #13464: Optimizer fails to use partial index on boolean when selected via "IS" operator.
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corey.huinker@gmail.com writes:
> Correct index is used on "WHERE y" and "WHERE y = true" but not "WHERE y IS
> TRUE".

y IS TRUE is not actually equivalent to the other two conditions ...

            regards, tom lane

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