| From: | Peter Smith <smithpb2250(at)gmail(dot)com> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com> |
| Cc: | Ajin Cherian <itsajin(at)gmail(dot)com>, Euler Taveira <euler(at)eulerto(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Rahila Syed <rahilasyed90(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Önder Kalacı <onderkalaci(at)gmail(dot)com>, japin <japinli(at)hotmail(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, David Steele <david(at)pgmasters(dot)net>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Amit Langote <amitlangote09(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: row filtering for logical replication |
| Date: | 2021-12-01 21:31:06 |
| Message-ID: | CAHut+Punapgam2-mOtSKhFzM80d+Mco_0yebPwZyOoU_Yw84cA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Sep 23, 2021 at 10:33 PM Tomas Vondra
<tomas(dot)vondra(at)enterprisedb(dot)com> wrote:
>
> 2) create_publication.sgml says:
>
> A <literal>NULL</literal> value causes the expression to evaluate
> to false; avoid using columns without not-null constraints in the
> <literal>WHERE</literal> clause.
>
> That's not quite correct, I think - doesn't the expression evaluate to
> NULL (which is not TRUE, so it counts as mismatch)?
>
> I suspect this whole paragraph (talking about NULL in old/new rows)
> might be a bit too detailed / low-level for user docs.
>
Updated docs in v44 [1]
Kind Regards,
Peter Smith.
Fujitsu Australia
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