然后用程序调用它
procedure TForm1.Button1Click(Sender: TObject);
var
s: string;
begin
with adoquery1 do
begin
close;
sql.Text := ' select t from t';
open;
if not eof then
s:= Fields[0].AsString;
showmessage(s);
showmessage(stringreplace(s,'''','''''',[rfReplaceAll]));
end;
end;