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leoli

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Post By：2022/3/25 22:28:00 [只看该作者]

老师，如截图，可以优化一下代码，使其下载资料后，将列partno相同，在同一个月内的的iquantity 相加，加到表 rdrecords11中。谢谢。

Dim cmd As New SQLCommand

Dim dt As DataTable

DataTables("rdrecords11").datarows.clear

cmd.C

Dim Cols111() As String = {"cInvcode","iquantity","Dvdate"}

Dim Cols222() As String = {"PartNo","Qty","Date"}

cmd.CommandText ="Se/lect cInvcode,iquantity,dvdate From {rdrecords11} Where [dvDate] > = '" & e.Form.Controls("Datetimepicker1").Value & "' And [dvDate] < = '" & e.Form.Controls("Datetimepicker2").Value & "'"

dt = cmd.ExecuteReader()

For Each dr1 As DataRow In dt.DataRows

Dim dr2 As DataRow = DataTables("rdrecords11").AddNew()

For i As Integer = 0 To Cols111.Length -1

dr2(Cols222(i)) = dr1(Cols111(i))

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Post By：2022/3/26 9:38:00 [只看该作者]

Dim cmd As New SQLCommand

Dim dt As DataTable

DataTables("rdrecords11").datarows.clear

cmd.C

Dim Cols111() As String = {"cInvcode","iquantity"}

Dim Cols222() As String = {"PartNo","Qty"}

cmd.CommandText ="select cInvcode,年,月,sum(iquantity) as iquantity from (Select cInvcode,iquantity,year(dvdate) as 年,month(dvdate) as 月 From {rdrecords11} Where [dvDate] > = '" & e.Form.Controls("Datetimepicker1").Value & "' And [dvDate] < = '" & e.Form.Controls("Datetimepicker2").Value & "') as a group by cInvcode,年,月"

dt = cmd.ExecuteReader()

For Each dr1 As DataRow In dt.DataRows

Dim dr2 As DataRow = DataTables("rdrecords11").AddNew()

For i As Integer = 0 To Cols111.Length -1

dr2(Cols222(i)) = dr1(Cols111(i))

dr2("date") = new Date(dr1("年"),dr1("月"),1)

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