Triggers in Oracle Vs MS SQL
Example of creating a Trigger in Oracle
Example of creating a Trigger in Oracle
CREATE OR REPLACE TRIGGER Print_salary_changes BEFORE DELETE OR INSERT OR UPDATE ON emp FOR EACH ROW WHEN (NEW.EMPNO > 0) DECLARE sal_diff number; BEGIN sal_diff := :NEW.SAL - :OLD.SAL; dbms_output.put('Old salary: ' || :OLD.sal); dbms_output.put(' New salary: ' || :NEW.sal); dbms_output.put_line(' Difference ' || sal_diff); END;
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