From: Tom Lane <tgl@sss.pgh.pa.us>
To: kes-kes@yandex.ru
Cc: pgsql-docs@lists.postgresql.org
Subject: Re: DOC not so clear
Date: Mon, 14 Jan 2019 11:15:31 -0500
Message-ID: <25974.1547482531@sss.pgh.pa.us> (raw)
In-Reply-To: <154747695538.22759.12913505368136831904@wrigleys.postgresql.org>
References: <154747695538.22759.12913505368136831904@wrigleys.postgresql.org>
=?utf-8?q?PG_Doc_comments_form?= <noreply@postgresql.org> writes:
> https://www.postgresql.org/docs/current/queries-table-expressions.html#QUERIES-LATERAL>> The resulting row(s) are joined as usual with the rows they were computed
>> from.
> Here is not so clear what 'joined as usual' mean.
Why not?
> Probably DOC should explicitly say that if LATERAL function return empty set
> then current row is excluded from result set
That would be wrong for "LEFT JOIN LATERAL ...", so it does not seem
like an improvement.
regards, tom lane
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To: pgsql-docs@postgresql.org
Cc: tgl@sss.pgh.pa.us, kes-kes@yandex.ru, pgsql-docs@lists.postgresql.org
Subject: Re: DOC not so clear
In-Reply-To: <25974.1547482531@sss.pgh.pa.us>
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