access表如何在查询中按某字段归类后将另一个字段的各条记录的值显示在计算ଠ字段中

模块中定义函数：
Public Function GroupConcat(sColumn As String, sTable As String, Optional sCriteria As String, Optional sDelimiter As String = ",")
On Error GoTo ErrHandler
Dim rs As New ADODB.Recordset
Dim sSQL As String
Dim sResult As String
sResult = ""
sSQL = "select " & sColumn & " from " & sTable
If sCriteria <> "" Then
sSQL = sSQL & " where " & sCriteria
End If
rs.Open sSQL, CurrentProject.Connection, adOpenForwardOnly, adLockReadOnly
Do While Not rs.EOF
If sResult <> "" Then
sResult = sResult & sDelimiter
End If
sResult = sResult & rs.Fields(0).Value
rs.MoveNext
Loop
rs.Close
Set rs = Nothing
GroupConcat = sResult
Exit Function
ErrHandler:
If rs.State <> adStateClosed Then
rs.Close
End If
Set rs = Nothing
GroupConcat = Err.Number & " : " & Err.Description

End Function
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select C, GroupConcat('T','表名','C=' & "'" & C & "'") as T
from 表名
group by C;
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