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 ...
CREATE TRIGGER Purchasing.LowCredit ON Purchasing.PurchaseOrderHeader AFTER INSERT AS IF (ROWCOUNT_BIG() = 0) RETURN; IF EXISTS (SELECT 1 FROM inserted AS i JOIN Purchasing.Vendor AS v ON v.BusinessEntityID = i.VendorID WHERE v.CreditRating = 5 ) BEGIN RAISERROR ('A vendor''s cr...
AI检测代码解析 CREATE TRIGGER [dbo].[tr_Update] ON AFTER UPDATE AS BEGIN SET NOCOUNT ON; SELECT mid=IDENTITY(int,1,1),* INTO #i FROM inserted IF @@rowcount=0 RETURN SELECT mid=IDENTITY(int,1,1),* INTO #d FROM deleted DECLARE @TableName nvarchar(10),@Recorder nvarchar(20),@s nvar...
(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 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...
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...
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*/ ...
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...
CREATE TRIGGER (Transact-SQL) Cursors (Transact-SQL) DELETE (Transact-SQL) INSERT (Transact-SQL) Text and Image Functions (Transact-SQL) WITH common_table_expression (Transact-SQL) FILESTREAM (SQL Server) Collation and Unicode Support Single-Byte and Multibyte Character SetsFeed...