with customerdata.QueryInstrument do //customerdata为一数据模块,QueryInstrument为一TAdoQuery
begin
active:=false;
close;
sql.Clear;
sql.Add('select * from instrument');
sql.Add('order by id desc');
open;
active:=true;
end;
然后打开一个窗口,上面放着有dbgrid和dbnavigator,用dbnavigator做插入操作时出错!出错信息如问题所示