1--TblClass 中有Id classname classdes2--创建一个和TblClass表结构一模一样的表3selecttop0* into TblClassBackupfromTblClass45select*fromTblClassBackup67--创建一个删除触发器8--当TblClass删除数据的时候,都插入备份表中9create trigger tri_delete_tblclass on TblClass10after delete11as12begin13insert i...
触发器的表执行 CREATE TRIGGER FOR UPDATE,则将创建另一个更新触发器。在早期版本中,在每个表上,每个数据修改 事件(INSERT、UPDATE 或 DELETE)只允许有一个触发器。 说明 如果触发器名称不同,则 CREATE TRIGGER(兼容级别为 70)的默认行为是在现有的触发器中添加其它触发器 。如果触发器名称相同,则 SQL Server ...
如果兼容级别是 70 或更高,则不必使用 WITH APPEND 子句添加现有类型的其它触发器(这是兼容级别设置为 70 或更高的 CREATE TRIGGER 的默认行为)。有关更多信息,请参见sp_dbcmptlevel。 WITH APPEND 不能与 INSTEAD OF 触发器一起使用,或者,如果显式声明 AFTER 触发器,也不能使用该子句。只有当出于向后兼容而...
create trigger tgInsteadOfRecordOnInsert on RecordINSTEADOFINSERTasbegin--首先在记录表中查找,判断是否还能借ifexists(select1from inserted a join Record b on a.cardNo=b.cardNo group by a.cardNo havingcount(*)>=5)--给出提示 print'已达到借书最大限制,无法再继续借阅!'elseinsert into Record select...
AFTER Specifies that the trigger is an after trigger. Db2 executes the triggered action after it applies any changes caused by an insert, delete, or update operation on the subject table. AFTER must not be specified if view-name is also specified. INSTEAD OF Specifies that the trigger is an...
(below average).CREATETRIGGERPurchasing.LowCreditONPurchasing.PurchaseOrderHeaderAFTERINSERTASIF(ROWCOUNT_BIG() =0)RETURN; IF EXISTS (SELECT1FROMinsertedASiJOINPurchasing.VendorASvONv.BusinessEntityID = i.VendorIDWHEREv.CreditRating =5)BEGINRAISERROR ('A vendor''s credit rating is too low to ...
create trigger tr_insert_recordInfo on recordInfo for insert as /*定义变量,用于临时存储插入的会员号、电脑编号和卡的编号*/ declare @cardId char(10) declare @PCId int declare @CardNumber char(10) /*从inserted临时表中获取插入的记录行的信息,包括电脑的编号、卡的编号*/ ...
If FIRE_TRIGGERS isn't specified, no insert triggers execute. FORMATFILE_DATA_SOURCE = 'data_source_name' Applies to:SQL Server 2017 (14.x). Specifies a named external data source pointing to the Azure Blob Storage location of the format file that will define the schema of imported data...
FIRE_TRIGGERS 適用於:SQL Server 2008 (10.0.x) 和更新版本。 指定在二進位資料流上傳作業期間,執行目的地資料表上所定義的任何插入觸發程序。 如需詳細資訊,請參閱 BULK INSERT (Transact-SQL)。 CHECK_CONSTRAINTS 適用於:SQL Server 2008 (10.0.x) 和更新版本。 指定在二進位資料流上傳作業期間,必須檢查目標...
Disabled triggers are enabled if the triggers are altered.Altering a trigger doesn't change the state (enabled or disabled) of the trigger. The OUTPUT INTO table clause ignores theIDENTITY_INSERT SETTING = OFFand allows explicit values to be inserted.You can't insert ...