[这是我在SQL查询中的问题,结果已成功将数据网格中的数据加载为SL_No(2,4,5),但表Pairing
中缺少一些数据,例如(1,2,3,4,5, 6)在关系表数据不可用的情况下,例如Receipt
表中的(1,3,6)。
Private Sub BtnView_Click(sender As Object, e As EventArgs) Handles btnView.Click
Dim Sql as String = "Select Pairing.Ledger_Index, Pairing.Fr_Customer_no, Pairing.Fr_Customer_nm, Receipt.Dt_Entry, Receipt.Price from Pairing INNER JOIN Receipt ON Pairing.Fr_Customer_no = Receipt.Sub_No WHERE (((Pairing.Ledger_Address)='" & cmbList.Text & "'))""
If RdoLedger.Checked=True Then
DatagridView_Load("sql",DatagridView1)
End If
End Sub
Public Function DatagridView_Load(ByVal Sql As String, ByVal Model As DataGridView)
Try
If con.State = ConnectionState.Open Then
con.Close()
End If
Model.DataSource = Nothing
Dim da As New OleDbDataAdapter(Sql, con)
Dim dt As New DataTable
dt.Clear()
da.Fill(dt)
If IsDBNull(dt) = False Then
Model.DataSource = (dt)
con.Close()
Else
Model.DataSource = Nothing
con.Close()
End If
Catch ex As Exception
MsgBox("ERROR : " & ex.Message.ToString)
End Try
Return True
End Function
[谢谢您的尸体回复我,因为我不会理解这个问题的答案。这是一些简单的答案。在这里,我需要第一张桌子的所有记录。所以我的查询应该是=来自配对INNER JOIN收据更改为来自配对left JOIN收据成功获得我的结果