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Re: Bug #633: CASE statement evaluation does not short-circut

From: Thomas Lockhart <lockhart(at)fourpalms(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: colejatmsu(dot)edu(at)postgresql(dot)org, pgsql-bugs(at)postgresql(dot)org,pgsql-hackers(at)postgresql(dot)org
Subject: Re: Bug #633: CASE statement evaluation does not short-circut
Date: 2002-04-16 02:33:05
Message-ID: 3CBB8D61.7F2498CA@fourpalms.org (view raw or flat)
Thread:
Lists: pgsql-bugspgsql-hackers
...
> I don't really consider this a bug; at least, fixing it would imply not
> const-simplifying the result expressions of CASEs, which is a cure far
> worse than the disease IMHO.  Does anyone think we *should* allow CASE
> to defeat const-simplification?

No. Constant-folding during parsing should *always* be allowed.

                   - Thomas

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