creación dun gatger sql
CREATE OR REPLACE TRIGGER trigg_example
BEFORE INSERT OR UPDATE ON table_example
FOR EACH ROW
WHEN (new.no_line > 0)
DECLARE
evol_exemple number;
BEGIN
evol_exemple := :new.exemple - :old.exemple;
DBMS_OUTPUT.PUT_LINE(' evolution : ' || evol_exemple);
END;
Breakable Barracuda