I was working on a little thing where I needed to simulate BETWEEN
SYMMETRIC so naturally I used least() and greatest(). I was a little
surprised to see that my expressions were not folded into straight
constants and the estimates were way off as a consequence.
I came up with the attached patch to fix it, but it's so ridiculously
small that I fear I'm missing something.
I don't think this needs any documentation and I didn't see where we
have any existing tests for eval_const_expressions so I didn't create
any either.
Thoughts?
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Vik Fearing +33 6 46 75 15 36
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support