SQL Befehl (SELECT Begriff FROM Tabelle) Was stimmt nicht?

[Sharky]

Zitat von Plague:

Delphi-Quellcode:

procedure TForm1.Button2Click(Sender: TObject);
var
LI: TListItem;
q :string;
begin
q:= Combobox1.Text;
with ZReadOnlyQuery1 do
  begin
    close;
    SQL.Clear;
    SQL.Text := ('SELECT * FROM Tabelle WHERE '+q);
    open;
...

Und was steht in ComboBox1.Text?