delphi6+sqlserver2000,當操作的表有Trigger對別的表進行操作時出錯? |
尚未結案
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dialog
一般會員 發表:33 回覆:18 積分:10 註冊:2002-09-07 發送簡訊給我 |
反回錯誤為:找不到要更新的列,最後讀取的數值已被變更
觸發器:
CREATE TRIGGER [BOMMD_1] ON [dbo].[BOMMD]
FOR DELETE
AS
declare @MD001 char(20),@MD003 char(20)
select @MD001=MD001,@MD003=MD003 from deleted
if exists(select MA001 from BOMMA where MA001=@MD003 and MA002=@MD001)
delete from BOMMA where MA001=@MD003 and MA002=@MD001
if exists(select MB001 from BOMMB where MB001=@MD003 and MB002=@MD001)
delete from BOMMB where MB001=@MD003 and MB002=@MD001
當有刪除操作是就出錯。但數據還是刪除。
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Mickey
版主 發表:77 回覆:1882 積分:1390 註冊:2002-12-11 發送簡訊給我 |
dialog 你好: 這個 Error 我沒遇過, 不過我習慣的 Trigger 寫法不同, 參考看看:
CREATE TRIGGER [BOMMD_1] ON [dbo].[BOMMD] FOR DELETE AS begin delete BOMMA from BOMMA,deleted where BOMMA.MA001=deleted.MD003 and BOMMA.MA002=deleted.MD001 delete BOMMB from BOMMB,deleted where BOMMB.MB001=deleted.MD003 and BOMMB.MB002=deleted.MD001 end |
hahalin
版主 發表:295 回覆:1698 積分:823 註冊:2002-04-14 發送簡訊給我 |
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