存储过程中的事务实现
一直以为存储过程会自动实现事务操作,其实不然。存储过程只是提供的事务操作的支持。要实现事务操作,还得自己实现。
基本上方法有两个:
- SET XACT_ABORT
指定当 Transact-SQL 语句产生运行时错误时,Microsoft® SQL Server™ 是否自动回滚当前事务。
语法
SET XACT_ABORT { ON | OFF }
注释
当 SET XACT_ABORT 为 ON 时,如果 Transact-SQL 语句产生运行 时 错误,整个事务将终止并回滚。为 OFF 时,只回滚产生错误的 Transact-SQL 语句,而事务将继续进行处理。编译错误(如语法错误)不受 SET XACT_ABORT 的影响。
对于大多数 OLE DB 提供程序(包括 SQL Server),隐性或显式事务中的数据修改语句必须将 XACT_ABORT 设置为 ON。唯一不需要该选项的情况是提供程序支持嵌套事务时。有关更多信息,请参见分布式查询和分布式事务。
SET XACT_ABORT 的设置是在执行或运行时设置,而不是在分析时设置。
例:
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- begin tran
/*要实现的操作*/
commit tran
if @@error>0
rollback
例:
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另外,在.NET的ADO.NET数据库编程中,可以使用SqlTransaction实现事务操作。
例:
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