我的方法如下:
function GetDateData(vDate: TDateTime): string;
var
iYear, iMonth, iDay: Word;
sDate, sYear, sMonth, sDay: string;
begin
DecodeDate(vDate, iYear, iMonth, iDay);
sYear := Copy(inttostr(iYear), 3, 4);
if length(inttostr(iDay)) = 1 then
sDay := '0' + inttostr(iDay)
else
sDay := inttostr(iDay);
case iMonth of
1..9: sDate := sYear + '0' + inttostr(iMonth) + sDay;
10: sDate := sYear + inttostr(iMonth) + sDay;
11: sDate := sYear + inttostr(iMonth) + sDay;
12: sDate := sYear + inttostr(iMonth) + sDay;
end;
Result := sDate;
end;如果同时生成5000条这样的记录,感觉会越来越慢,请高手指点一下,你们用什么方法转换呢
function GetDateData(vDate: TDateTime): string;
var
iYear, iMonth, iDay: Word;
sDate, sYear, sMonth, sDay: string;
begin
DecodeDate(vDate, iYear, iMonth, iDay);
sYear := Copy(inttostr(iYear), 3, 4);
if length(inttostr(iDay)) = 1 then
sDay := '0' + inttostr(iDay)
else
sDay := inttostr(iDay);
case iMonth of
1..9: sDate := sYear + '0' + inttostr(iMonth) + sDay;
10: sDate := sYear + inttostr(iMonth) + sDay;
11: sDate := sYear + inttostr(iMonth) + sDay;
12: sDate := sYear + inttostr(iMonth) + sDay;
end;
Result := sDate;
end;如果同时生成5000条这样的记录,感觉会越来越慢,请高手指点一下,你们用什么方法转换呢
ShowMessage(FormatDateTime('YYYYMMDD',Now));
否则
function GetDateData(vDate: TDateTime): string;
begin
result:=datetostr(vDate);
delete(result,8,1);
delete(result,5,1);
end;
datename(year,getdate())+datename(month,getdate())+datename(day,getdate())
var str : string;
begin
str := FormatDateTime('YYYYMMDD',vData));
end;