语法错误。在查询表达式中 -Delphi

Question

我有以下查询并遇到错误，我正在使用 XE8 和 MS Access

语法错误。在查询表达式中 '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中获取，并希望将FK保存在tblcaractivity中table。

建议由维多利亚现在的事业"Unspecified error"提供。

你能帮我修改我的代码以在 tblcaractivity 中保存 FK table。

Answer 1

试一试；

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;

语法错误。在查询表达式中 -Delphi

Syntax error. in query expression -Delphi

sql

delphi

ms-access

tadoquery

delphi-xe8