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From: François Lafont <[email protected]>
To: pgsql-general <[email protected]>
Subject: Re: psql and regex not like
Date: Thu, 6 Mar 2025 11:45:49 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <CANzqJaCmmqNjSNitxWPekwM7mQesZCfAdXjOprKao8Ted35E-w@mail.gmail.com>
References: <CANzqJaCmmqNjSNitxWPekwM7mQesZCfAdXjOprKao8Ted35E-w@mail.gmail.com>

Hi,

On 3/6/25 10:37, Ron Johnson wrote:
> This statement runs great from the psql prompt.  Does exactly what I want.
> select datname from pg_database WHERE datname !~ 'template|postgres' ORDER BY datname;
> 
> But it doesn't work so well from the bash prompt.  Not escaping the "!" generates a bunch of garbage, while escaping throws an sql syntax error.
> 
> psql -Xc "select datname from pg_database WHERE datname \!~ 'template|postgres' ORDER BY datname;"
> ERROR:  syntax error at or near "\"
> 
> What's the magic syntax?

Indeed it's a question about bash.

This works well for me:

     set +H
     psql -Xc "SELECT datname FROM pg_database WHERE datname !~ 'template|postgres' ORDER BY datname;"

~$ echo "!~"
-bash: !~: event not found

~$ set +H

~$ echo "!~"
!~

Bye.

-- 
François Lafont

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