From: | Wolfgang Walther <walther(at)technowledgy(dot)de> |
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To: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
Cc: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Sergey Shinderuk <s(dot)shinderuk(at)postgrespro(dot)ru>, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, dean(dot)a(dot)rasheed(at)gmail(dot)com, er(at)xs4all(dot)nl, joel(at)compiler(dot)org, pgsql-hackers(at)lists(dot)postgresql(dot)org |
Subject: | Re: Schema variables - new implementation for Postgres 15 |
Date: | 2024-05-31 13:49:38 |
Message-ID: | 143925f8-8fb3-4e98-8452-93a7e9e94d18@technowledgy.de |
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Pavel Stehule:
> When you write RAISE NOTICE '%', x, then PLpgSQL parser rewrite it to
> RAISE NOTICE '%', SELECT $1
>
> There is no parser just for expressions.
That's why my suggestion in [1] already made a difference between:
SELECT var;
and
SELECT col, var FROM table, var;
So the "only require variable-in-FROM if FROM is used" should extend to
the SQL level.
That should be possible, right?
Best,
Wolfgang
[1]:
https://www.postgresql.org/message-id/e7faf42f-62b8-47f4-af5c-cb8efa3e0e20%40technowledgy.de
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