how to check type of value in postgres

Question

I want to check type of value in postgres like this:

SELECT id,
       CASE 
         WHEN val_is_integer THEN (SOME_QUERY)
         WHEN val_isnot_integer T         


        

Answer 1

If anyone else wonders How to just get data type of a varible (not column) you can use the pg_typeof(any) function.

Simply

SELECT pg_typeof(your_variable);

OR

SELECT pg_typeof('{}'::text[]); //returns text[];

Note

pg_typeof(varchar_column) will return character varying regardless of the content of the column. Any column or variable is already typed and pg_typeof will return that declared type. It will not find the "best fitting" type depending on the value of that column (or variable). -- quote from a_horse_with_no_name's comment.