我有两个表,我想比较记录 - 基于字段值。这是我试过的:
Dim RCount As Long
Dim Rst As Recordset
Dim Rst1 As Recordset
Dim f As Field
'Current Record set
Set Rst = CurrentDb.OpenRecordset("Table1")
Set Rst1 = CurrentDb.OpenRecordset("Table2")
With Rst
For Each f In Rst1.Fields
RCount = DCount("FieldFromTable1", "Table1", "[FieldFromTable1]='" & Me.[FieldFromTable2].Value & "'")
If RCount > 0 Then
Me.Checkbox1.Value = True
End If
Next f
End With
Rst.Close
Rst1.Close
这是我更新的问题,就像我想要完成的那样。但是这段代码仍然只能通过我的Table2表格中当前选择的记录循环。
答案 0 :(得分:0)
继续发表评论。您可以使用记录计数来查看是否存在存在且匹配的记录。您可以使用以下查询来查看是否存在记录:
dim rst as recordset
dim varSQL as string
varSQL = "SELECT [fieldfromtable1] FROM Table1 WHERE [fieldfromtable1] ='" & [fieldfromtable2].value & "'"
Set Rst = CurrentDb.OpenRecordset(varSQL)
If rst.recordcount = 1 then
MsgBox "Fields have matching values !"
End If
rst.close
您可以将=1
替换为>0
。
或者,我认为您可以使用dcount()函数,类似于:
dim RCount as long
Rcount = dcount("fieldFromTable1","table1", "[fieldFromTable1]='" & me.[FieldFromTable2].value & "'")
if Rcount > 0 then
MsgBox "Fields have matching values !"
end if
再次,您可以使用>0
或=1
我不确定哪种情况最适合您的情况。
修改
可以执行以下查询来更新复选框,但这不是表单级别
UPDATE table1 INNER JOIN table2 ON table1.[fieldfromtable1] = table2.[fieldfromtable2] SET table1.[checkboxField] = True
WHERE table2.[fieldfromtable2]= table1.[fieldFromtable1]
答案 1 :(得分:0)
我还没有真正考虑只在表中更新记录的选项。 Thsi是它对我有用的东西。当Table1中的记录符合表2中的条件时,我只是试图将Checkbox设置为TRUE。一个简单的UPDATE解决了这个问题:
Dim SQL As String
niz = " UPDATE Table2" & _
" INNER JOIN Table1" & _
" ON Table1.FieldFromTable1=Table2.FieldFromTable2" & _
" SET Table2.Checkbox1=True"
DoCmd.SetWarnings False
DoCmd.RunSQL niz
DoCmd.Requery
DoCmd.SetWarnings True