Re: count_nulls(VARIADIC "any")

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Marko Tiikkaja <marko(at)joh(dot)to>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: count_nulls(VARIADIC "any")
Date: 2015-11-21 05:06:25
Message-ID: 15336.1448082385@sss.pgh.pa.us
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Marko Tiikkaja <marko(at)joh(dot)to> writes:
> Here's a patch implementing this under the name num_nulls(). For
> January's CF, of course.

What's this do that "count(*) - count(x)" doesn't?

regards, tom lane

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