Hello Robert (Bob?), Thank you for your answer. I will surely make a wide use the COALESCE function in my scripts. I also noticed the same behaviour in PL/pgSQL: CREATE FUNCTION "xxxxxxxxxxxxxx" (text, text) RETURNS text AS 'BEGIN RETURN $1 || ' ' || $2; END; ' LANGUAGE 'plpgsql' Correct me if I am wrong: It seems that a NULL value is not passed to the function ... ... or is it that a NULL value is not taken into account by PL/pgSQL. Thank you all for the COALESCE trick. Greetings from Jean-Michel POURE, Paris, France pgAdmin development team ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
