在MS Access中,我想在选择查询的返回结果中插入一个新列。新列的每一行都有相同的值。例如,我选择返回列A,B和我想C到被选择查询创建新列:如何在选择查询中创建新列
A B C
----------
a1 b1 c
a2 b2 c
a3 b3 c
在MS Access中,我想在选择查询的返回结果中插入一个新列。新列的每一行都有相同的值。例如,我选择返回列A,B和我想C到被选择查询创建新列:如何在选择查询中创建新列
A B C
----------
a1 b1 c
a2 b2 c
a3 b3 c
select A, B, 'c' as C
from MyTable
这取决于你想例如与柱做什么这里是追加一个新列的记录,可以在客户端进行更新的例子:
Sub MSDataShape_AddNewCol()
Dim rs As ADODB.Recordset
Set rs = CreateObject("ADODB.Recordset")
With rs
.ActiveConnection = _
"Provider=MSDataShape;" & _
"Data Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:\Tempo\New_Jet_DB.mdb"
.Source = _
"SHAPE {" & _
" SELECT ExistingField" & _
" FROM ExistingTable" & _
" ORDER BY ExistingField" & _
"} APPEND NEW adNumeric(5, 4) AS NewField"
.LockType = adLockBatchOptimistic
.Open
Dim i As Long
For i = 0 To .RecordCount - 1
.Fields("NewField").Value = Round(.Fields("ExistingField").Value, 4)
.MoveNext
Next
rs.Save "C:\rs.xml", adPersistXML
End With
End Sub
选择场, 场2, “例如” AS野 FROM表1 这将增加一列名为“新领域“的输出,其价值将永远是”示例“。