Re: CVS to In_list without dynamic SQL, how?

DO $$declare

   csv text := '''1'',''2'',''3''';

  v_var text;

begin

    select var into v_var from tx_vendor where vendor_key in csv;

    RAISE NOTICE 'result=(%)', v_var ;

end$$;

Obviously the above does not work, but hopefully explain what I am trying to accomplish. 

Thanks,

Mike