Re: psql and regex not like

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
throwsan 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