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我有以下查询并面临错误，我正在将 XE8 与 MS Access 一起使用

语法错误。在查询表达式 'select CCarID from tblcar where Car = (LX008)'

Procedure TFNewCarAct.BtnSaveClick(Sender: TObject);
begin
adoQueryCCA.Close();
adoQueryCCA.SQL.Clear;
adoQueryCCA.SQL.Add('INSERT INTO tblcaractivity ([CCarID],[Date],[Millage],[SerRcd],[EOType],[EOQunt],[AirFil],[GOil])');
adoQueryCCA.SQL.Add('values (select CCarID from tblcar where Car = ('+ComboBox2.Text+'))');
adoQueryCCA.SQL.Add('VALUES(:Date,:Millage,:SerRcd,:EOType,:EOQunt,:AirFil,:GOil)');
adoQueryCCA.Parameters.ParamByName('Date').Value:= Edit6.Text;
adoQueryCCA.Parameters.ParamByName('Millage').Value:= Edit1.Text;
adoQueryCCA.Parameters.ParamByName('SerRcd').Value:= memo1.Text;
adoQueryCCA.Parameters.ParamByName('EOType').Value:= Edit2.Text;
adoQueryCCA.Parameters.ParamByName('EOQunt').Value:= Edit3.Text;
adoQueryCCA.Parameters.ParamByName('AirFil').Value:= Edit4.Text;
adoQueryCCA.Parameters.ParamByName('GOil').Value:= Edit5.Text;
adoQueryCCA.ExecSQL;
ShowMessage('Done');
end;

更新：

procedure TFNewCarAct.FromShow(Sender: TObject);
begin
   ADOQueryCT.Open;
   while Not ADOQueryCT.Eof do
   begin
      ComboBox1.Items.Add(ADOQueryCT.FieldByName('Name').AsString);
      ADOQueryCT.Next;
   end;
   ADOQueryCT.Close;
   if ComboBox1.Items.Count > 0 then ComboBox1.ItemIndex := 0;
   end;

procedure TFNewCarAct.OnComboBox1Change(Sender: TObject);
begin
 ComboBox2.Items.BeginUpdate;
   try
      ComboBox2.Clear;
      ADOQueryCC.Parameters.ParamByName('Name').Value := ComboBox1.Text;
      ADOQueryCC.Open;
      while Not ADOQueryCC.Eof do
      begin
         ComboBox2.Items.AddObject(ADOQueryCC.FieldByName('Car').AsString, '');
         ADOQueryCC.Next;
      end;
      ADOQueryCC.Close;
      if ComboBox2.Items.Count > 0 then ComboBox2.ItemIndex := 0;
   finally
      ComboBox2.Items.EndUpdate;
   end;
end;

comboBox2 中的 Car 从 tblecar 获取并希望将 FK 保存在 tblcaractivity 表中。

维多利亚提供的建议现在会导致“未指定的错误”。

你能帮助我如何修改我的代码以将 FK 保存在 tblcaractivity 表中。

4

1 回答 1

0

试一下;

Procedure TFNewCarAct.BtnSaveClick(Sender: TObject);
begin
adoQueryCCA.Close();
adoQueryCCA.SQL.Clear;
adoQueryCCA.SQL.Add('INSERT INTO tblcaractivity ([CCarID],[Date],[Millage],[SerRcd],[EOType],[EOQunt],[AirFil],[GOil])');
adoQueryCCA.SQL.Add('VALUES(:CCarID,:Date,:Millage,:SerRcd,:EOType,:EOQunt,:AirFil,:GOil)');
adoQueryCCA.Parameters.ParamByName('CCarID').Value:= Integer(ComboBox2.Items.Objects[ComboBox2.ItemIndex]);
adoQueryCCA.Parameters.ParamByName('Date').Value:= Edit6.Text;
adoQueryCCA.Parameters.ParamByName('Millage').Value:= Edit1.Text;
adoQueryCCA.Parameters.ParamByName('SerRcd').Value:= memo1.Text;
adoQueryCCA.Parameters.ParamByName('EOType').Value:= Edit2.Text;
adoQueryCCA.Parameters.ParamByName('EOQunt').Value:= Edit3.Text;
adoQueryCCA.Parameters.ParamByName('AirFil').Value:= Edit4.Text;
adoQueryCCA.Parameters.ParamByName('GOil').Value:= Edit5.Text;
adoQueryCCA.ExecSQL;
ShowMessage('Done');
end;

procedure TFNewCarAct.FromShow(Sender: TObject);
begin
   ADOQueryCT.Open;
   while Not ADOQueryCT.Eof do
   begin
      ComboBox1.Items.Add(ADOQueryCT.FieldByName('Name').AsString);
      ADOQueryCT.Next;
   end;
   ADOQueryCT.Close;
   if ComboBox1.Items.Count > 0 then ComboBox1.ItemIndex := 0;
   end;

procedure TFNewCarAct.OnComboBox1Change(Sender: TObject);
begin
 ComboBox2.Items.BeginUpdate;
   try
      ComboBox2.Clear;
      ADOQueryCC.Parameters.ParamByName('Name').Value := ComboBox1.Text;
      ADOQueryCC.Open;
      while Not ADOQueryCC.Eof do
      begin
         ComboBox2.Items.AddObject(ADOQueryCC.FieldByName('Car').AsString, TObject(ADOQueryCC.FieldByName('CCarID').AsInteger));
         ADOQueryCC.Next;
      end;
      ADOQueryCC.Close;
      if ComboBox2.Items.Count > 0 then ComboBox2.ItemIndex := 0;
   finally
      ComboBox2.Items.EndUpdate;
   end;
end;
于 2017-08-07T15:44:02.487 回答