Re: Table column with numeric and string values

[soumitra bhandary <soumitra.bhandary@xxxxxxxxxxx>]

Hi, 

You can try to filter data with some function and function code should be like below . 

CREATE OR REPLACE FUNCTION "sys"."isnumeric"(text)
RETURNS "pg_catalog"."bool" AS $BODY$
DECLARE x NUMERIC;
BEGIN
    x = $1::NUMERIC;
    RETURN TRUE;
EXCEPTION WHEN others THEN
    RETURN FALSE;
END;
$BODY$
  LANGUAGE 'plpgsql' IMMUTABLE STRICT  COST 100
;

Try this out 

Thanks,

Soumitra

Sent from my iPhone

On 13-Sep-2021, at 2:25 PM, Firthouse banu <penguinsfairy@xxxxxxxxx> wrote:

Hello everyone, 

Need a urgent help.

I have a table sqlt_data with column strungvalue  as character varying , in that column we have both numbers and string. 

I have function which pulls this values and do round(avg(string value::numeric,2),0) . Am able to run the function fine with numeric values and it is obvious but for string values getting error. How to make this function work with string values . As far as I know avg or round cannot be done on string values. Please advise.

Thanks

Firthouse