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help / color / mirror / Atom feedFrom: Les <[email protected]>
To: Tom Lane <[email protected]>
Cc: [email protected]
Subject: Re: psycopg3 - parameters cannot be used for DDL commands?
Date: Wed, 5 Jan 2022 18:19:12 +0100
Message-ID: <CAKXe9UApjJiajmbYJxTK8MSyop5r1tvqjbrmHgueZ=MFkd706g@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CAKXe9UDix+STcO8akzNNhjS4tEZd7xs203XNn72G35ELm81=WQ@mail.gmail.com>
<[email protected]>
Ok, thanks!
Tom Lane <[email protected]> ezt írta (időpont: 2022. jan. 5., Sze, 18:07):
> Les <[email protected]> writes:
> > PostgreSQL server log:
>
> > 2022-01-05 17:35:25.831 CET [58] ERROR: syntax error at or near "$1" at
> > character 35
> > 2022-01-05 17:35:25.831 CET [58] STATEMENT: ALTER USER postgres WITH
> > PASSWORD $1
>
> Yeah, as a general rule parameters can only be used in DML commands
> (SELECT/INSERT/UPDATE/DELETE). Utility commands don't support them
> because they don't have expression-evaluation capability.
>
> (Perhaps this will change someday, but don't hold your breath.)
>
> > Passwords can also contain special characters. If I can't use parameters
> to
> > do this, then how should I quote them in a safe way?
>
> Most client libraries should have a function to convert an arbitrary
> string into a safely-quoted SQL literal that you can embed into the
> command. I don't know psycopg3, so I don't know what it has for that.
>
> regards, tom lane
>
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Subject: Re: psycopg3 - parameters cannot be used for DDL commands?
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