Re: IS NULL seems to return false, even when parameter is NULL

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Andrus" <kobruleht2(at)hot(dot)ee>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: IS NULL seems to return false, even when parameter is NULL
Date: 2008-10-20 12:34:32
Message-ID: 27121.1224506072@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

"Andrus" <kobruleht2(at)hot(dot)ee> writes:
> PostgreSQL OR is not commutative if left operand evaluates to NULL.

This is nonsense.

regards, tom lane

In response to

Browse pgsql-general by date

  From Date Subject
Next Message Matthias Karlsson 2008-10-20 12:46:05 Slow delete with with cascading foreign keys
Previous Message Andrus 2008-10-20 12:26:04 Re: IS NULL seems to return false, even when parameter is NULL