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	Mon, 27 Dec 2021 12:38:29 -0500
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
cc: Peter Eisentraut <peter.eisentraut@enterprisedb.com>,
        Rahila Syed <rahilasyed90@gmail.com>,
        PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: Column Filtering in Logical Replication
In-reply-to: <202112271706.rcweqk4jqkyr@alvherre.pgsql>
References: <202112271706.rcweqk4jqkyr@alvherre.pgsql>
Comments: In-reply-to Alvaro Herrera <alvherre@alvh.no-ip.org>
	message dated "Mon, 27 Dec 2021 14:06:18 -0300"
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Date: Mon, 27 Dec 2021 12:38:29 -0500
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Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> Determining that an array has a NULL element seems convoluted.  I ended
> up with this query, where comparing the result of array_positions() with
> an empty array does that.  If anybody knows of a simpler way, or any
> situations in which this fails, I'm all ears.

Maybe better to rethink why we allow elements of prattrs to be null?

			regards, tom lane