From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: bobocc@yahoo.com
To: pgsql-docs@lists.postgresql.org
Subject: Re: Merge statement
Date: Thu, 17 Nov 2022 18:47:37 +0100
Message-ID: <20221117174737.w7jhwzarwmudolue@alvherre.pgsql> (raw)
In-Reply-To: <166870559096.639.9180457099983661630@wrigleys.postgresql.org>
On 2022-Nov-17, PG Doc comments form wrote:
> The following documentation comment has been logged on the website:
>
> Page: https://www.postgresql.org/docs/15/sql-merge.html
> Description:
>
> From the description it looks like a single WHEN clause is accepted, which
> is definitely not true.
Hmm, the main synopsis has
when_clause [...]
where the [...] is there to indicate that when_clause can appear an
arbitrary number of times.
> Please let us know how many WHEN clauses are accepted for each of WNEM
> MATCHED and WHEN NOT MATCHED.
There's no specific restriction, although I didn't try to find a
limit. I wonder what happens if you have a few hundred thousand ...
Time to experiment, I guess.
--
Álvaro Herrera Breisgau, Deutschland — https://www.EnterpriseDB.com/
"No deja de ser humillante para una persona de ingenio saber
que no hay tonto que no le pueda enseñar algo." (Jean B. Say)
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To: pgsql-docs@postgresql.org
Cc: alvherre@alvh.no-ip.org, bobocc@yahoo.com, pgsql-docs@lists.postgresql.org
Subject: Re: Merge statement
In-Reply-To: <20221117174737.w7jhwzarwmudolue@alvherre.pgsql>
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