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ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('select * from TT where name='''+Edit1.Text+''' and dateday='+Datetostr(DateTimePicker1.DateTime));
ADOQuery1.Open;
if not ADOQuery1.eof then
begin
showmessage('¼ÇÂ¼ÖØ¸´');
exit;
dateday×Ö¶ÎÊÇʲôÀàÐÍ£¬Èç¹ûÊÇ×Ö·ûÀàÐÍ£¬ÄÇÈÕÆÚÖµÒª¼ÓÒýºÅ£¬Èç¹ûÊÇÈÕÆÚÀàÐ͸ñʽ£¬¶ÔÓÚaccessÊý¾Ý¿âÈÕÆÚֵҪǰºó¼Ó'#'ÐÞÊηû
'select * from TT where name='''+Edit1.Text+''' and '# dateday #'='+Datetostr(DateTimePicker1.DateTime));
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format('%.10f',[datetime]),²»¹ýÕâÑùÓеãÎó²î
ADOQuery1.SQL.Add('select * from TT where name='''+Edit1.Text+''' and dateday=:day');
adoquery1.Parameters.ParamByName('day').Value := DateTimePicker1.DateTime
ADOQuery1.SQL.Add('select * from TT where name=:name and dateday=:day');
adoquery1.Parameters.ParamByName('day').Value := DateTimePicker1.DateTime;
adoquery1.parameters.parambyname('name').value := Edit1.Text;
dateday×Ö¶ÎÓ¦¸ÃÊÇÈÕÆÚÀàÐ͵İɣ¿Ê±¼äÄǶù¼Ó¸ö'#' ¾ÍºÃ
ADOQuery1.SQL.Add('select * from TT where name= '+Edit1.Text+' and
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