Re: escape vs. bytea in config

From: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
To: Mathias Mayrhofer <mtmayr(at)mtmayr(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: escape vs. bytea in config
Date: 2023-03-07 12:35:09
Message-ID: 7c9dddd89d923275e9b5083100f75dfa4f169e9d.camel@cybertec.at
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On Tue, 2023-03-07 at 11:53 +0100, Mathias Mayrhofer wrote:
> -- /etc/postgresql/14/main/postgresql.conf
> -- bytea_output = 'escape'
>
> db=> select encode(digest('mtmayr', 'sha256'), 'escape');
> ┌────────────────────────────────────────────────────────────────────────────────────────────┐
> │ encode │
> ├────────────────────────────────────────────────────────────────────────────────────────────┤
> │ \277\x19\225\335g\307\224\337-\347Y\203\254\324\x1Ff\307Ph*\267\\\243\2515S\213WX\204\375G │
> └────────────────────────────────────────────────────────────────────────────────────────────┘
>
> db=> select digest('mtmayr', 'sha256');
> ┌────────────────────────────────────────────────────────────────────────────────────────────┐
> │ digest │
> ├────────────────────────────────────────────────────────────────────────────────────────────┤
> │ \277\031\225\335g\307\224\337-\347Y\203\254\324\037f\307Ph*\267\\\243\2515S\213WX\204\375G │
> └────────────────────────────────────────────────────────────────────────────────────────────┘
>
> -- ^^ differences ^^^^

They are actually the same: octal 31 is hexadecimal 19.

The difference is between the "encode" function and the type putput function of "bytea".

Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com

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