IN list and OR processing

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: hackers(at)postgreSQL(dot)org (PostgreSQL-development)
Subject: IN list and OR processing
Date: 1999-02-24 04:46:18
Message-ID: 199902240446.XAA04991@candle.pha.pa.us
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I saw this in the Ingres list. It describes exactly how we process

SELECT * FROM tab WHERE col IN (1,2,3,4)

and describes a problem we could have if the list is large.

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