Return empty table instead of cryptic upper bound of for loop error

[kobruleht]

If there are no rows in result, empy table with key columns should returned intead of raising "upper bound of for loop" exception. Add those lines

        execute ('create temp table ' || in_table || ' on commit drop as ' || in_query);
-- Start of added lines
GET DIAGNOSTICS Arv = ROW_COUNT;
            if Arv  = 0 then
Execute 'create temp table ' || quote_ident(out_table) || ' on commit drop as select * from '||in_table ;
return;
            end if;
-- End of added lines
...