如何在我的 SQL 代码中查找语法错误？

Question

我正在尝试编译我的代码，但每次都会遇到相同的错误：

查询表达式中的语法错误（缺少运算符） ' True Status.Subsystem Not LIKE '''

这是我的代码：

Sub Import_Loop_Check_list()

Dim strSQL As String
Dim SS_sel As String
Dim rcrd As DAO.Recordset

If IsNull(Cobsubsystem) Then
    SS_sel = "True"
   Else
    If IsNull(Logic1) Then
        SS_sel = "Status.Subsystem LIKE '" & Cobsubsystem & "' "
   Else
        SS_sel = "Status.Subsystem NOT LIKE '" & Cobsubsystem & "' "
    End If
End If

strSQL = " SELECT DISTINCT LOOP_JB.Loop_name, [Easyplant Dump query].Subsystem, LOOP_JB.PANEL_FROM, LOOP_JB.ITR_PANEL_FROM, LOOP_JB.ITR_PANEL_FROM_state, LOOP_JB.CABLE_NUM, LOOP_JB.ITR_cable, LOOP_JB.ITR_STATE_Cable, LOOP_JB.Cabinet_JB, LOOP_JB.ITR_Cabinet_JB, LOOP_JB.ITR_STATE_CABINET, Multicors.CABLE_NUM AS Multicore, Multicors.ITR_PANEL_FROM, Multicors.ITR_PANEL_FROM_state, [Cabinet query].PANEL_TO, [Cabinet query].ITR_PANEL_TO, [Cabinet query].ITR_PANEL_TO_state INTO [LOOP_Check] " & _
         " FROM (LOOP_JB INNER JOIN ([Cabinet query] RIGHT JOIN Multicors ON [Cabinet query].CABLE_NUM = Multicors.CABLE_NUM) ON LOOP_JB.Loop_name = Multicors.Loop_name) INNER JOIN [Easyplant Dump query] ON LOOP_JB.Loop_name = [Easyplant Dump query].Clean_Tag_Number" & _
         " WHERE True " & SS_sel & strSQL

DoCmd.SetWarnings False
DoCmd.RunSQL strSQL
DoCmd.SetWarnings True

DoCmd.OpenTable "LOOP_Check"

End Sub

Answer 1

我又看了一遍——别的东西没有意义。

您在 WHERE 中引用了 Status.Subsystem，但没有名为 Status 的表 -- 您没有包含完整的查询吗？

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原答案

我认为错误信息很清楚——你有一个奇怪的 where 语句

WHERE True Status.Subsystem Not LIKE

你可能是说

WHERE Status.Subsystem Not LIKE

所以改变这一行

     " WHERE True " & SS_sel & strSQL

到这里

     " WHERE " & SS_sel & strSQL

另外，这对我来说不正确——您确定要对 Multicors 进行右连接而不是左连接吗？您希望 multicors 表中每一行的结果中都有一行吗？