SQL 游标使用实例

IF EXISTS(SELECT *FROM sysobjects WHERE name='sp_ContestSubmit')      DROP PROC sp_ContestSubmitGO-- =============================================-- Author:        zqt-- Create date: 2011-11-25-- Desc:        系统管理员批量给未交卷的考生交卷-竞赛-- =============================================Create proc sp_ContestSubmit@GroupID int            --考核IDas--申明一个游标DECLARE MyCursor CURSOR        FOR select PK_UserExamID,FK_UserID,FK_ExamOrContestID from Score_UserExam where IsComplete=0 AND  FK_ExamOrContestID in(select PK_ContestInfoID from Contest_Info where FK_ContestGroupID=@GroupID)--打开一个游标    OPEN MyCursor--循环一个游标DECLARE @UserExamID int ,@UserID int ,@ExamManageID int    FETCH NEXT FROM  MyCursor INTO @UserExamID, @UserID,@ExamManageIDWHILE @@FETCH_STATUS =0    BEGIN        --获取考试考试分数        DECLARE @UserExamScore int        select @UserExamScore=sum(Score) from Score_UserAnswer where FK_UserID=@UserID AND FK_UserExamID=@UserExamID                --修改考生交卷信息        UPDATE [Score_UserExam] SET [Score] =@UserExamScore,[IsComplete] = 1,[EndTime] = getdate(),[DurationSecs] = datediff(ss,BeginTime,getdate()) where PK_UserExamID=@UserExamID         FETCH NEXT FROM  MyCursor INTO @UserExamID, @UserID,@ExamManageID    END    --关闭游标CLOSE MyCursor--释放资源DEALLOCATE MyCursor/* 测试    exec sp_ContestSubmit 1*/ GO