Mysql Trigger Update & Insert
18th Mar 2011 at 11:21 AM | Posted in Uncategorized | Leave a commentSHOW TRIGGERS;
CREATE TABLE `employees` ( `employeeNumber` int(11) NOT NULL, `lastName` varchar(50) NOT NULL, `firstName` varchar(50) NOT NULL, `extension` varchar(10) NOT NULL, `email` varchar(100) NOT NULL, `officeCode` varchar(10) NOT NULL, `reportsTo` int(11) default NULL, `jobTitle` varchar(50) NOT NULL, PRIMARY KEY (`employeeNumber`))
CREATE TABLE employees_audit ( id int(11) NOT NULL AUTO_INCREMENT, employeeNumber int(11) NOT NULL, lastname varchar(50) NOT NULL,
changedon datetime DEFAULT NULL, action varchar(50) DEFAULT NULL, PRIMARY KEY (id) )
Insert:
DROP TRIGGER before_employee_update;DELIMITER $$CREATE TRIGGER before_employee_update BEFORE UPDATE ON employeesFOR EACH ROW BEGININSERT INTO employees_auditSET action = ‘update’,lastname = OLD.lastname,changedon = NOW(); END$$DELIMITER ;
Update:
DROP TRIGGER before_employee_update;DELIMITER $$CREATE TRIGGER before_employee_update BEFORE UPDATE ON employeesFOR EACH ROW BEGINUPDATE employees_auditSET action = ‘update’,employeeNumber = NEW.employeeNumber,lastname = NEW.lastname,changedon = NOW() WHERE employeeNumber=NEW.employeeNumber; END$$DELIMITER ;
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