Архив / Процедуры-MSSQLServer

tblEmployee

Update tblEmployee Set fltSalary=12000 Where intEmpId=1023 tgrEmployeeSalaryUpdate

UPDATE tblEmployee SET fltSalary = 1.05 * @Salary_old

WHERE intEmployeeId = @Id

tgrEmployeeSalaryUpdate

tblDetail

Триггер записывает в таблицу tblDetail суммарное количество деталей после внесения изменений в таблицу tblDelivery

CREATE TRIGGER tgr_delivery_update ON tblDelivery AFTER UPDATE

AS

Declare @nn int, @id int BEGIN

SELECT @id=id_d FROM DELETED EXECUTE prDetailSum @id, @nn OUTPUT

UPDATE tblDetail SET total=@nn WHERE id_d=@id END

Обновление нескольких строк

UPDATE tblDelivery SET n=30 WHERE id_p=4

Обновление нескольких строк

CREATE TRIGGER tgr_delivery_update ON tblDelivery AFTER INSERT, UPDATE

AS

DECLARE @id int, @nn int

DECLARE cur CURSOR FOR SELECT id_d FROM INSERTED BEGIN

OPEN cur

FETCH NEXT FROM cur INTO @id WHILE @@FETCH_STATUS = 0

BEGIN

EXECUTE prDetailSum @id, @nn OUTPUT UPDATE tblDetail SET total=@nn WHERE id_d=@id FETCH NEXT FROM cur INTO @id

END CLOSE cur

END

Команда Insert

INSERT INTO tblDelivery (id_d, id_p, n) VALUES(1, 1, 100)

Имитация работы автоинкрементного поля

CREATE TRIGGER tgr_detail_insert ON tblDetail INSTEAD OF INSERT

AS

DECLARE @id int, @w real, @c char(20), @cl char(10), @n char(20)

BEGIN

SELECT @n=dname, @w=weight, @c=city, @cl=color FROM INSERTED

SELECT @id = max(id_d) FROM tblDetail SET @id=@id+1

INSERT INTO d (id_d, dname, weight, city, color, total) VALUES(@id, @n, @w, @c, @cl, 0)

END