第一步:创建一个新的数据库 CREATEDATABASETriggerExample; 1. 首先,我们需要创建一个新的数据库来存储我们的示例数据和触发器。使用CREATE DATABASE语句可以创建一个名为TriggerExample的数据库。 第二步:创建一个包含触发器的表 USETriggerExample;CREATETABLEEmployees(IDINTPRIMARYKEY,NameVARCHAR(50),SalaryINT); ...
ALTER TABLE trig_example ENABLE TRIGGER trig1 GO 1. 2. --禁用某个表上的所有触发器 ALTER TABLE 你的表 DISABLE TRIGGER all 1. --启用某个表上的所有触发器 ALTER TABLE 你的表 enable TRIGGER all 1. --禁用所有表上的所有触发器 exec sp_msforeachtable 'ALTER TABLE ? DISABLE TRIGGER all' 1...
CREATE TRIGGER trg_PreventDropTable ON DATABASE FOR DROP_TABLE AS BEGIN -- 检查要删除的表名 IF EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]', 'NVARCHAR(128)') = 'ExampleTable' BEGIN -- 抛出错误,阻止删除操作 RAISERROR('不允许删除表 ExampleTable', 16, 1); ROLLBACK TRANSACTION; ...
Transact-SQL reference for the CREATE TRIGGER statement, which is used to create a DML, DDL, or logon trigger.
Transact-SQL reference for the CREATE TRIGGER statement, which is used to create a DML, DDL, or logon trigger.
Transact-SQL reference for the CREATE TRIGGER statement, which is used to create a DML, DDL, or logon trigger.
CREATE TRIGGER <触发器名称> --触发器必须有名字,最多64个字符,可能后面会附有分隔符.它和MySQL中其他对象的命名方式基本相象. { BEFORE | AFTER } --触发器有执行的时间设置:可以设置为事件发生前或后。 { INSERT | UPDATE | DELETE } --同样也能设定触发的事件:它们可以在执行insert、update或delete的过...
For more information, see How to: Edit the Test.sql Script to Run Objects that use SQL Server Common Language Run-time Integration. Add code to the Test.sql file to execute the trigger. See the second example that follows this procedure. Press F5 to build, deploy, and debug the trigger...
--查看数据库中所有触发器 https://docs.microsoft.com/en-us/sql/t-sql/statements/create-trigger-transact-sql?view=sql-server-ver15 -- 涂聚文(Geovin Du) edit https://www.mssqltips.com/sqlservertip/5909/sql-server-trigger-example/ select * from sysobjects where xtype='TR' -- exec sp_he...
Before You Begin How to Create a DML Trigger Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance This topic describes how to create a Transact-SQL DML trigger by using SQL Server Management Studio and by using the Transact-SQL CREATE TRIGGER statement. Before You Begin Limit...