Re: Table column with numeric and string values

pramod kg <pramod11287@xxxxxxxxx> · Mon, 13 Sep 2021 16:13:06 +0530

You can use regex with CASE in your select query:
select value, case when value ~ '\d' then (round(value::numeric)::varchar) else (value::varchar) end from sqlt_data;

Verify the efficiency of the query before implementing it.

On Mon, Sep 13, 2021 at 2:47 PM soumitra bhandary <soumitra.bhandary@xxxxxxxxxxx> wrote:

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 