Horton

Re: UNION JOIN vs UNION SELECT

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: Thomas Lockhart <lockhart@alumni.caltech.edu>, pgsql-hackers@postgreSQL.org
Date: 2000-10-16T03:59:16Z
Lists: pgsql-hackers 
Bruce Momjian <pgman@candle.pha.pa.us> writes:
>> I think it's time to bite the bullet and put in a lookahead filter.
>> What say you?

> Hmmm.  Not real excited about that for performance reasons.  Other options?

It's been in there for a month.  I'll bet lunch you will be unable to
measure any performance cost --- one extra function call and if-test
per token lexed is just not going to show on the radar screen.

			regards, tom lane