I have three tables: CREATE TABLE table1 ( id char(8) NOT NULL, .... PRIMARY KEY (id) ); CREATE TABLE table2 ( id char(8) NOT NULL, .... PRIMARY KEY (id), FOREIGN KEY (id) REFERENCES table1 (id) ON DELETE CASCADE ); CREATE TABLE table3 ( id char(8) NOT NULL, code char(2) NOT NULL, orders integer NOT NULL, .... PRIMARY KEY (id,code,orders), FOREIGN KEY (id) REFERENCES table2 (id) ON DELETE CASCADE ); Now you can see I must insert a row in table1 1st, then insert a row in table2, then insert the rowS in table3. That is OK Now I want to delete an id in all three tables. How can I delete a row in table1 trigger to delete rows in table2, table3? Since I can't put "ON DELETE CASCADE" for PRIMARY KEY in table1. Now I can only delete a row in table2 which trigger to delete rowS in table3. If I want to CREATE TRIGGER BEFORE DELETE ON table1 FOR EACH ROW EXECUTE PROCEDURE table1_trigger(arg); What I suppose pass to the arg in table1_trigger()? Thank you very much in advance! -- Why we want to teach our babies to talk and walk, then later we tell them "sit down!", "be quiet!" ? Democracy is not a better way for a solution, it is just another way to spread the blames. --Raymond
begin:vcard n:Chui;Raymond tel;fax:(301)713-0963 tel;home:ICQ #: 16722494 tel;work:(301)713-0624 Ext. 168 x-mozilla-html:TRUE url:http://members.xoom.com/rchui/ org:NWS, NOAA version:2.1 email;internet:[EMAIL PROTECTED] title:SA, DBA adr;quoted-printable:;;NOAA, NWS, Office of Hydrology, W/OH2=0D=0A1325 East-West Highway, Room 8112;Silver Spring;MD;20910-3283;U.S.A. x-mozilla-cpt:;30256 fn:Raymond Chui end:vcard
