删除与修改触发器

在 SQL Server 中构建与优化触发器

Florin Angelescu

Instructor

删除表与视图触发器

DROP TRIGGER PreventNewDiscounts;

DROP TRIGGER PreventNewDiscounts;

DROP TRIGGER PreventViewsModifications
ON DATABASE;

数据库

DROP TRIGGER PreventNewDiscounts;

DROP TRIGGER PreventViewsModifications
ON DATABASE;

DROP TRIGGER DisallowLinkedServers
ON ALL SERVER;

数据库

服务器

DISABLE TRIGGER PreventNewDiscounts
ON Discounts;

DISABLE TRIGGER PreventViewsModifications
ON DATABASE;

DISABLE TRIGGER DisallowLinkedServers
ON ALL SERVER;

数据库

服务器

ENABLE TRIGGER PreventNewDiscounts
ON Discounts;

ENABLE TRIGGER PreventViewsModifications
ON DATABASE;

ENABLE TRIGGER DisallowLinkedServers
ON ALL SERVER;

数据库

服务器

CREATE TRIGGER PreventDiscountsDelete
ON Discounts
INSTEAD OF DELETE
AS
    PRINT 'You are not allowed to data from the Discounts table.';

DROP TRIGGER PreventDiscountsDelete;

CREATE TRIGGER PreventDiscountsDelete
ON Discounts
INSTEAD OF DELETE
AS
    PRINT 'You are not allowed to remove data from the Discounts table.';

CREATE TRIGGER PreventDiscountsDelete
ON Discounts
INSTEAD OF DELETE
AS
    PRINT 'You are not allowed to data from the Discounts table.';

ALTER TRIGGER PreventDiscountsDelete
ON Discounts
INSTEAD OF DELETE
AS
    PRINT 'You are not allowed to remove data from the Discounts table.';

在 SQL Server 中构建与优化触发器