15.5.3 事务对游标影响的示例.sql

sqlserver 数据库编程的绝好脚本

SET CURSOR_CLOSE_ON_COMMIT ON      --设置为ON时,下面的代码报错
--SET CURSOR_CLOSE_ON_COMMIT OFF   --设置为OFF(默认值时),下面的代码正常
DECLARE tb CURSOR LOCAL
FOR
SELECT id=1 UNION ALL SELECT id=1
OPEN tb
DECLARE @id int
FETCH tb INTO @id
WHILE @@FETCH_STATUS=0
BEGIN
	BEGIN TRAN
		IF @id%2=1
			COMMIT TRAN
		ELSE
			ROLLBACK TRAN
	FETCH tb INTO @id
END
CLOSE tb
DEALLOCATE tb