如何避免光标........................... [英] How to Avoid cursor...........................
本文介绍了如何避免光标...........................的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
-- i hava one temp table (#tempTbl)
DECLARE @Sno INT
DECLARE @Id INT
DECLARE @TotalMinutes AS INTEGER=0
DECLARE @OTimeMinutes AS INTEGER=0
DECLARE @RUMinutes INTEGER=0
DECLARE sumcal CURSOR GLOBAL SCROLL STATIC OPTIMISTIC FOR SELECT Id,Sno FROM #tempTbl
OPEN sumcal
FETCH FIRST FROM sumcal INTO @Id,@Sno
WHILE ( @@FETCH_STATUS = 0 )
BEGIN
SELECT @RUMinutes = SUAM FROM #tempTbl WHERE SNo=@Sno
SELECT @TotalMinutes = SUM(SUAM) FROM #tempTbl WHERE Id=@Id and SNo<=@Sno
IF(@TotalMinutes>2400)
BEGIN
if (SELECT COUNT(*) FROM #tempTbl WHERE Id=@Id AND SNo<@Sno AND OTM>0)>0
BEGIN
SELECT @OTimeMinutes = SUAM FROM #tempTbl WHERE SNo=@Sno SET @RUMinutes = 0
END
ELSE
BEGIN
SET @OTimeMinutes = (@TotalMinutes-2400)
SET @RUMinutes = (@RUMinutes - @OTimeMinutes)
END
END
ELSE
BEGIN
SET @OTimeMinutes = 0
END
UPDATE #tempTbl SET OTM = @OTimeMinutes, RSUM = @RUMinutes WHERE SNo=@Sno
SET @OTimeMinutes = 0
SET @TotalMinutes = 0
SET @RUMinutes = 0
FETCH NEXT FROM sumcal INTO @Id,@Sno
END
CLOSE sumcal
DEALLOCATE sumcal
#tempTbl table :
SNo Id SUAM OTM RSUM
1 254 480 0 0
2 254 480 0 0
3 254 480 0 0
4 254 480 0 0
5 254 480 0 0
6 254 480 0 0
7 277 480 0 0
8 277 480 0 0
9 277 480 0 0
10 277 480 0 0
output
SNo Id SUAM OTM RSUM
1 254 480 0 480
2 254 480 0 480
3 254 480 0 480
4 254 480 0 480
5 254 480 0 480
6 254 480 480 0
7 277 480 0 480
8 277 480 0 480
9 277 480 0 480
10 277 480 0 480
推荐答案
我找到了:将光标更改为基于查询/设置的查询/任何人 [ ^ ]
UPS!
有人删除上面的帖子。
报告在这里:http://www.codeproject.com/Messages/4661621/Is-it -possible-to-restore-deleted-QA-item-with-ans.aspx [ ^ ]
[/ EDIT]
I found it: change cursor to query/set based query/anyone[^]
UPS!
Someone delete above thread.
Reported here: http://www.codeproject.com/Messages/4661621/Is-it-possible-to-restore-deleted-QA-item-with-ans.aspx[^]
[/EDIT]
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