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

On 11/11/23 17:04, pf(at)pfortin(dot)com wrote:
> On Sat, 11 Nov 2023 16:53:01 -0800 Adrian Klaver wrote:
>
>> On 11/11/23 16:25, pf(at)pfortin(dot)com wrote:
>> Reply to list also
>> Ccing list
>>> On Sat, 11 Nov 2023 16:16:20 -0800 Adrian Klaver wrote:
>>>
>>
>>>> Probably because it is spelled regexp_replace ().
>>>
>>> OK, found it in pg_catalog; but "create extension regexp_replace;" won't
>>> load it. How do I get regexp_* into public schema?
>>
>> Not sure why you are trying create extension regexp_replace;.
>>
>> The functions are already loaded:
>>
>> \df regexp_replace
>> List of functions
>> Schema | Name | Result data type | Argument
>> data types | Type
>> ------------+----------------+------------------+------------------------------------------+------
>> pg_catalog | regexp_replace | text | text, text, text
>> | func
>> pg_catalog | regexp_replace | text | text, text, text,
>> integer | func
>> pg_catalog | regexp_replace | text | text, text, text,
>> integer, integer | func
>> pg_catalog | regexp_replace | text | text, text, text,
>> integer, integer, text | func
>> pg_catalog | regexp_replace | text | text, text, text,
>> text | func
>
> Running my SQL in public, I get:
> An error occurred when executing the SQL command:
> select * from a,b where regex_replace(a.address,' ','','g') =
> regex_replace(b.address,' ','','g')

Again because it is regexp_replace not regex_replace. NOTE the 'p'.
^
>
> 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. Position: 27
>
> Looks like rexexp_* need to be installed in each database I use...
>
> The question is how to use them from public where I get the above
> error...?
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com