In sas there are only two variable types, namely Character and numeric.

date/time in sas are stored as numbers. You can use proper formats to show it as desired format. See your problem in following example.

1    data _null_;
2
3
4    datetime_Char='2011-9-2  9:37';
5    datetime_Num=input(datetime_Char,anydtdtm21.);
6
7    put datetime_Num datetime18.;
8
9    run;

  02SEP11:09:37:00

前辈  我不大明白 上面的程序 啥意思？？

可以使用 format x datetime.; x是指你的时间变量。这样定义之后就可以输入和显示了。。。

*就像这个样子；
data time;
input @1 x datetime20.;
format x datetime20.;
cards;
01jan60:23:59:59
;
run;