From: | Christopher Browne <cbbrowne(at)acm(dot)org> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: comparing nulls |
Date: | 2004-01-20 16:06:51 |
Message-ID: | m3oesybo4k.fsf@wolfe.cbbrowne.com |
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Lists: | pgsql-sql |
Centuries ago, Nostradamus foresaw when lawgon(at)thenilgiris(dot)com (Kenneth Gonsalves) would write:
> On Tuesday 20 January 2004 19:26, Chris Bowlby wrote:
>> Under 7.3.x this option was removed, you need to test via:
>>
>> SELECT * from table where field IS NULL;
> thanx - works in both 7.1 and 7.3 - why do these guys keep fooling around
> with these thangs?
Because there is a desire to have PostgreSQL conform with public
standards such as SQL-1999.
The use of "IS NULL" conforms with SQL standards; the use of "= NULL"
does not.
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