I have the following column in all my tables which contains data of last update of this row: updated timestamp without time zone DEFAULT now() NOT NULL, Hor to force Postgres to update this column automatically with now() value every time when row is updated ? I have about 100 tables and don't like to write 100 triggers. ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org