谁能帮我从 SQL 2000 改进这个游标逻辑的性能。它在 SQl2005 和 SQL2008 中运行良好,但在 SQL 2000 中运行至少需要 20 分钟。顺便说一句,我永远不会选择使用游标,而且我没有写这段代码,只是想让它运行得更快。将此客户端升级到 2005/2008 不是近期的选择。
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------- Rollup totals in the chart of accounts hierarchy
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DECLARE @B_SubTotalAccountID int, @B_Debits money, @B_Credits money, @B_YTDDebits money, @B_YTDCredits money
DECLARE Bal CURSOR FAST_FORWARD FOR
SELECT SubTotalAccountID, Debits, Credits, YTDDebits, YTDCredits FROM xxx
WHERE AccountType = 0 AND SubTotalAccountID Is Not Null and (abs(credits)+abs(debits)+abs(ytdcredits)+abs(ytddebits)<>0)
OPEN Bal
FETCH NEXT FROM Bal INTO @B_SubTotalAccountID, @B_Debits, @B_Credits, @B_YTDDebits, @B_YTDCredits
--For Each Active Account
WHILE @@FETCH_STATUS = 0
BEGIN
--Loop Until end of subtotal chain is reached
WHILE @B_SubTotalAccountID Is Not Null
BEGIN
UPDATE xxx2
SET Debits = Debits + @B_Debits,
Credits = Credits + @B_Credits,
YTDDebits = YTDDebits + @B_YTDDebits,
YTDCredits = YTDCredits + @B_YTDCredits
WHERE GLAccountID = @B_SubTotalAccountID
SET @B_SubTotalAccountID = (SELECT SubTotalAccountID FROM xxx2 WHERE GLAccountID = @B_SubTotalAccountID)
END
FETCH NEXT FROM Bal INTO @B_SubTotalAccountID, @B_Debits, @B_Credits, @B_YTDDebits, @B_YTDCredits
END
CLOSE Bal
DEALLOCATE Bal