问题1
procedure Tmainfrm.SnButton1Click(Sender: TObject);
var
tt:string;
begin
tt:=datetostr(datetimepicker1.Date);
adoquery1.Close;
adoquery1.SQL.Clear;
adoquery1.SQL.Add('insert into reward_pun(worker_id,worker_name,record_date,'
+'record_type,allow_unit)values (''9941999'',''冷瑟'','''+tt+''',''奖励'',''技术开发部'')');
adoquery1.ExecSQL;
end;
请问这里的双引号是什么意思呀!!!!
例如:''9941999''