Victor Sterpu wrote: > When I run the query from down I receive an error. > How can I write this query to receive the day ot the week. > SELECT EXTRACT(DOW FROM timestamp TO_TIMESTAMP('14-10-2011', 'DD-MM-YYYY')); Maybe you mean SELECT EXTRACT(DOW FROM TO_TIMESTAMP('14-10-2011', 'DD-MM-YYYY')); Yours, Laurenz Albe