- Foxtable(狐表) (http://foxtable.net/bbs/index.asp)
-- 专家坐堂 (http://foxtable.net/bbs/list.asp?boardid=2)
---- [求助]重复值查找并导到另一同结构表时太缓慢 (http://foxtable.net/bbs/dispbbs.asp?boardid=2&id=74621)
-- 发布时间：2015/9/15 16:31:00
-- [求助]重复值查找并导到另一同结构表时太缓慢
Dim i As Integer
For i = 0 To DataTables("零件工艺").DataRows.Count-1 Step 1
Dim dr As DataRow = DataTables("零件工艺").DataRows(i)
Dim dr2 As DataRow = DataTables("零件工艺").Find("图号=\'" & dr("图号") & "\' and 计件工序=\'" & dr("计件工序") & "\' and _Identify <> " & dr("_Identify"))
If dr2 IsNot Nothing Then
Dim dr3 As DataRow = DataTables("重复工序零件工艺").AddNew
For Each dr4 As DataCol In DataTables("重复工序零件工艺").DataCols
dr3(dr4.Name) = dr(dr4.Name)
Next
End If
Next
上述代码执行卡死，数据只2万行多一点，是哪儿有问题呢？
此主题相关图片如下：零件工序.jpg
-- 发布时间：2015/9/15 18:06:00
--
使用以下sql查找重复记录，一个循环赋值即可，查询结果放到sql查询器看看
Sel ect a.* FROM {零件工艺} As a inner join (Sel ect 图号,计件工序 FROM {零件工艺} GROUP BY 图号,计件工序 HAVING Count(*)>1 ) As Tmp ON a.图号=Tmp.图号 And a.计件工序= Tmp.计件工序
-- 发布时间：2015/9/15 18:08:00
--
关于效率问题参考http://www.foxtable.com/help/topics/2225.htm
-- 发布时间：2015/9/15 18:14:00
--
谢谢，帮助内容太多，有时找都要好半天，有时还想不透，所有就提问了。
-- 发布时间：2015/9/15 19:23:00
--
mark 查询与赋值
Dim tdic As new Dictionary(of DataRow, DataRow)
Dim tls As new List(of DataRow)
Dim i As Integer
For i = 0 To DataTables("零件工艺").DataRows.Count-1
Dim dr As DataRow = DataTables("零件工艺").DataRows(i)
Dim dr2 As DataRow = DataTables("零件工艺").Find("图号=\'" & dr("图号") & "\' and 计件工序=\'" & dr("计件工序") & "\' and _Identify <> " & dr("_Identify"))
If dr2 IsNot Nothing Then
tdic.add(dr2, dr)
Else
tls.Add(dr)
End If
Next
For Each key As DataRow In tdic.Keys
For Each dc As DataCol In DataTables("重复工序零件工艺").DataCols
key(dc.Name) = tdic(key)(dc.Name)
Next
Next
For Each dr As DataRow In tls
Dim ndr As DataRow = DataTables("重复工序零件工艺").AddNew
For Each dc As DataCol In DataTables("重复工序零件工艺").DataCols
ndr(dc.Name) = dr(dc.Name)
Next
Next