SQL(一) cursor用法
DECLARE @OldId varchar(50)DECLARE @CustomerID varchar(50)DECLARE My_Cursor CURSOR --定义游标FOR (select CustomerID,oldid from Customer where Area='bj') --查出需要的集合放到游标中OPEN My_Cursor; --打开游标FETCH NEXT FROM My_Cursor INTO @CustomerID,@OldId; --读取第一行数据WHILE @@FETCH_STATUS = 0 BEGIN DECLARE @OtherPro VARCHAR(500) DECLARE @StatusID varchar(200) DECLARE @Userid varchar(200) DECLARE @FinalUserid varchar(200) SELECT @OtherPro=OtherPro,@StatusID=CustomerStatusID,@Userid=UserID FROM bjsunmis.dbo.Customer WHERE CustomerID=@OldId; SELECT @FinalUserid=UserID from Users where oldid=@Userid INSERT INTO CustomerotherInfo(CustomerID,OtherPro,CustomerStatusID,UserID)VALUES(@CustomerID,@OtherPro,@StatusID,@FinalUserid) FETCH NEXT FROM My_Cursor INTO @CustomerID,@OldId; --读取下一行数据 ENDCLOSE My_Cursor; --关闭游标DEALLOCATE My_Cursor; --释放游标GO
