-- Transact-SQL.-- Preparations.SETNOCOUNTON;SETIMPLICIT_TRANSACTIONSOFF; GO WHILE (@@TranCount > 0)COMMITTRANSACTION; GO IF (OBJECT_ID(N'dbo.t1',N'U') IS NOT NULL)DROPTABLEdbo.t1; GOCREATEtabledbo.t1 (aINT); GO PRINT N'--- [Test A] --- OFF ---';PRINT N'[A.01] Now,SET...
Jet 3.0开始支持隐式的事务(Implicit transactions)。当最后一个事务被提交之后,数据库会自动开启一个新的事务。 baike.baidu.com|基于12个网页 3. 隐含式交易 牛的大脑 ... share/exclusive lock( 共享/互斥锁)Implicit Transactions(隐含式交易) Explicit Transactions( 明确式交易) ... ...
SET IMPLICIT_TRANSACTIONS { ON | OFF } 注释 如果设置为 ON,SET IMPLICIT_TRANSACTIONS 将连接设置为隐式事务模式。如果设置为 OFF,则使连接恢复为自动提交事务模式。 如果连接处于隐式事务模式,并且当前不在事务中,则执行下列任一语句都可启动事务: 展开表 ALTER TABLE FETCH REVOKE BEGIN TRANSACTION GRANT ...
When a connection is operating in implicit transaction mode, the instance of the SQL Server Database Engine automatically starts a new transaction after the current transaction is committed or rolled back. You do nothing to delineate the start of a transaction; you only commit or roll back each...
SQL Server中的implicit_transactions 一spid 60 set implicit_transactions on select @@TRANCOUNT--值为0 update testtable set c1=11 where id=1 select @@TRANCOUNT--值为1, select * from testtable with(readpast)--且id为1的记录已成功修改为11,但没有commit则仍锁定该记录,但在同一spid可查询到已被...
1--设置隐式事务与显式事务IMPLICIT_TRANSACTIONS2--http://technet.microsoft.com/zh-cn/library/ms187807.aspx3--语法4--SET IMPLICIT_TRANSACTIONS { ON | OFF }56--只是对当前进程(查询窗口)有效,当你关闭了这个查询窗口之后在另外一个7--查询窗口里修改不加COMMIT TRAN照样可以提交8910--如果设置为 ON...
Advanced Transactions Topics Save Add to Collections Add to Plan Share via Facebookx.comLinkedInEmail Print Article 10/04/2012 DB-Library applications and Transact-SQL scripts use the Transact-SQL SET IMPLICIT_TRANSACTIONS ON statement to start implicit transaction mode. Use the SET IMPLICIT_TRANSACTI...
When SQL_AUTOCOMMIT_OFF is set by an ODBC application, the SQL Server ODBC driver issues a SET IMPLICIT_TRANSACTION ON statement. ADO ADO does not support implicit transactions. ADO applications use either autocommit mode or explicit transactions. ...
SET NOCOUNT ON; SET IMPLICIT_TRANSACTIONS OFF; GO WHILE (@@TranCount > 0) COMMIT TRANSACTION; GO IF (OBJECT_ID(N'dbo.t1',N'U') IS NOT NULL) DROP TABLE dbo.t1; GO CREATE table dbo.t1 (a INT); GO PRINT N'--- [Test A] --- OFF ---'; PRINT N'[A.01] Now, SET IMPLICIT...
This is the page out of SQL Server Books Online (BOL) that you want. It explains all the ...