Simon Riggs <[email protected]> writes:
> I've always been scared to ask this question, in case the answer is No,
> but: Do we have a set of regression tests for the optimizer anywhere?
Nothing beyond what is in the standard tests. While that's okay at
catching wrong answers --- and we have memorialized a number of such
issues in the tests --- the framework is not good for catching things
that run slower than they ought.
regards, tom lane
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