From: Peter Kovacs <peter.kovacs.1.0rc@gmail.com>
To: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-hackers@postgresql.org, pgsql-performance@postgresql.org, "Andrea Olson" <Aolson.CCAP.Courts@wicourts.gov>
Cc: Bill Severson <BSEVERS.CCAP.Courts@wicourts.gov>
Cc: John Hutchins <jhutchi.CCAP.Courts@wicourts.gov>
Cc: Randy Peterson <RPETERS.CCAP.Courts@wicourts.gov>
Cc: Shannon Spranger <ssprang.CCAP.Courts@wicourts.gov>
Subject: Re: [PERFORM] EXISTS optimization
Date: Sat, 24 Mar 2007 00:04:44 +0100
Message-ID: <b6e8f2e80703231604v72b9dc4dr51eebd62274d53ec@mail.gmail.com> (raw)
In-Reply-To: <46040DAC.EE98.0025.0@wicourts.gov>
References: <4603C1A3.EE98.0025.0@wicourts.gov>
<25339.1174686582@sss.pgh.pa.us>
<46040DAC.EE98.0025.0@wicourts.gov>
On 3/23/07, Kevin Grittner <Kevin.Grittner@wicourts.gov> wrote:
[...]
> That's the good news. The bad news is that I operate under a management portability dictate which doesn't currently allow that syntax, since not all of the products they want to
It doesn't really touch the substance, but I am curious: are you not
even allowed to discriminate between products in your code like:
if db is 'postresql' then
...
else
...
?
What would be the rationale for that?
Thanks
Peter
cover support it. I tried something which seems equivalent, but it is
running for a very long time. I'll show it with just the explain
while I wait to see how long the explain analyze takes.
>
[...]
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To: pgsql-performance@postgresql.org
Cc: peter.kovacs.1.0rc@gmail.com, Kevin.Grittner@wicourts.gov, tgl@sss.pgh.pa.us, Aolson.CCAP.Courts@wicourts.gov, BSEVERS.CCAP.Courts@wicourts.gov, jhutchi.CCAP.Courts@wicourts.gov, RPETERS.CCAP.Courts@wicourts.gov, ssprang.CCAP.Courts@wicourts.gov
Subject: Re: [PERFORM] EXISTS optimization
In-Reply-To: <b6e8f2e80703231604v72b9dc4dr51eebd62274d53ec@mail.gmail.com>
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