Re: Aren't regex_*() functions built-in?

On 11/11/23 16:12, pf@pfortin.com wrote:
> Hi,
> 
> PostgreSQL 15.4 on x86_64-mageia-linux-gnu, compiled by gcc (Mageia
> 12.3.0-3.mga9) 12.3.0, 64-bit
> (the distro which can't figure out how to provide pgAdmin4)
> 
> Aren't all the functions listed in
> https://www.postgresql.org/docs/current/functions-string.html
> assumed to be included in a base installation?
> 
> I'm able to use replace(); but with regex_replace(), I get:
> ERROR: function regex_replace(text, unknown, unknown, unknown) does not
> exist Hint: No function matches the given name and argument types. You
> might need to add explicit type casts.

Probably because it is spelled regexp_replace ().

> 
> ncsbe=# \df "replace"
>                            List of functions
>     Schema   |  Name   | Result data type | Argument data types | Type
> ------------+---------+------------------+---------------------+------
>   pg_catalog | replace | text             | text, text, text    | func
> (1 row)
> 
> ncsbe=# \df "regex"
>                         List of functions
>   Schema | Name | Result data type | Argument data types | Type
> --------+------+------------------+---------------------+------
> (0 rows)
> 
> There are no regex* functions in /usr/share/postgresql/extension
> 
> Thanks,
> Pierre
> 
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com