InObject Explorer, right-click a server, and then selectProperties. On theAdvancedpage, set theAllow Triggers to Fire Othersoption toTrue(the default) orFalse. Use Transact-SQL Connect to the Database Engine. From the Standard bar, selectNew Query. ...
数据库有一个原则是代码离数据越近越好,所以优先选择Default,依次为Rules,Triggers,Constraint(约束如外健主健Check/UNIQUE……,数据类型的最大长度等等都是约束),PROCEDURE这样不仅维护工作小,编写程序质量高,并且执行的速度快。 如果要插入大的二进制值到Image列,使用存储过程,千万不要用内嵌INSERT来插入。因为这样应...
mysql> select * from triggers\G 查看所有触发器 mysql> select * from triggers where trigger_name='触发器名称'\G 查看某个触发器 1. 2. 3. 4. 删除触发器 DROP TRIGGER 解发器名称 1. 实例 例一 1、创建表 mysql> create table stu( -> id int primary key auto_increment, -> name char(2...
CLR triggers behave the same way as T-SQL triggers, bringing the same power to the table: centralization and encapsulation of logic. However, CLR triggers can be written in a .NET language and possibly take advantage of resources not easily accessible from T-SQL, such as regular expressions...
SQL Server DDL 触发器(Trigger)-- 创建数据库级别的DDL触发器 以下针对某个数据库在创建数据表时调用触发器,并将创建该数据表的用户账户写入到Windows的Event Log中。 CREATETRIGGERreminderONDATABASEFORCREATE_TABLEASDECLARE@strNVARCHAR(100)SET@str=suser_sname()+N'create a new table'RAISERROR(@str,10,1...
DDL triggers can fire in response to a Transact-SQL event processed in the current database, or on the current server. The scope of the trigger depends on the event. For example, a DDL trigger created to fire in response to a CREATE_TABLE event can do so whenever a CREATE_TABLE event...
Get-SQLQuery-Verbose-InstanceMSSQLSRV04\SQLSERVER2014-WorkstationId"DevBox"-Query'DROP TRIGGER MyHostsOnly on all server' 创建登录触发器来限制应用程序 以下是在家庭实验室中设置触发器的说明,该触发器将根据连接的应用程序名称来限制访问。 1.使用SSMS以sysadmin身份登录到新的SQL Server实例。
The SQL Server Database Engine processes queries on various data storage architectures such as local tables, partitioned tables, and tables distributed across multiple servers. The following sections cover how SQL Server processes queries and optimizes query reuse through execution plan caching....
2.首先,让我们看一下使用以下命令连接到SQL Server实例的应用程序的名称。它应该返回的是“Microsoft SQL Server Management Studio – Query”。 SELECT APP_NAME() 3.创建一个仅允许白名单内的应用程序进行连接的登录触发器。你可以完全按照下面所示的代码执行触发器。 CREATE TRIGGER MyAppsOnly ON ALL SERVER FO...
适用范围:SQL Server(SQL Server 2016 (13.x) 到当前版本)、Azure SQL 数据库。 SERVER CONTROL SERVER DATABASE ALTER ANY CONTRACT ALSC SERVER CONTROL SERVER DATABASE ALTER ANY DATABASE AUDIT ALDA SERVER ALTER ANY SERVER AUDIT DATABASE ALTER ANY DATABASE DDL TRIGGER ALTG SERVER CONTROL SERVER DATA...