mssql trigger create database TestTriggerDb go use TestTriggerDb go create table Student ( StuId char(4) primary key, StuName varchar(10) ) go create table Score ( StuId char(4), WrittenExam numeric(5,2), LabExa
SQL USEAdventureWorks2022; GO IF OBJECT_ID ('Purchasing.LowCredit','TR') IS NOT NULLDROPTRIGGERPurchasing.LowCredit; GO-- This trigger prevents a row from being inserted in the Purchasing.PurchaseOrderHeader table-- when the credit rating of the specified vendor is set to 5 (below average)...
Microsoft SQL Server 2008 R2 and Microsoft SQL Server 2012 vary as follows: Transact-SQLdoes not support this feature.
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...
Microsoft SQL Server 2008 R2 and Microsoft SQL Server 2012 vary as follows: Transact-SQLdoes not support this feature. Transact-SQL does not supportFOR EACH ROWtriggers in general (see feature T211-04, section2.1.2.209). See[ISO/IEC9075-1:2011]for the definition of "trigger"....
Transact-SQL 语法约定 语法 TRIGGER_NESTLEVEL ( [ object_id ] , [ 'trigger_type' ] , [ 'trigger_event_category' ] ) 参数 object_id 触发器的对象 ID。如果指定了 object_id,则返回为该语句执行指定触发器的次数。如果未指定 object_id,则返回为该语句执行全部触发器的次数。
SqlTriggerContext 類別會提供觸發程序的內容資訊。 此內容相關資訊包括會造成引發觸發程序的動作類型 (已在 UPDATE 作業中修改其資料行),而且若是資料定義語言 (DDL) 觸發程序,則包括描述觸發作業的 XML EventData 結構。 如需有關如何使用 SqlTriggerContext 類別的詳細資訊和範例,請參閱<CLR 觸發程序>。 如需...
Learn about the nested triggers option. See how to use it to set the number of levels of AFTER triggers that can cascade in SQL Server.
ENABLE TRIGGER (Transact-SQL) 2025/01/03 本文内容 语法 参数 备注 权限 显示另外 2 个 适用于: SQL Server Azure SQL 数据库 Azure SQL 托管实例 启用DML、DDL 或登录触发器。 Transact-SQL 语法约定 语法 syntaxsql ENABLETRIGGER{ [schema_name. ]trigger_name[ ,...n ] |ALL}ON{object_name|DATABA...
错误Can’t update table ‘’ in stored function/trigger because it is already used by statement 产生原因 - 原因一: 触发器中使用了insert语句 示例表结构 定义一个插入触发器,new代表插入进来的值,new.sex则说明插进来的sex 插入触发器定义成功 执行插入语句... ...