O
oer_2001
Unregistered / Unconfirmed
GUEST, unregistred user!
表t1
a b
1 dfad
2 adf
3 fdsf
4 sdf
6 asdfd
8 adfds
10 adsfd
12 adf
按当a>=5,4<a<=10,a>10分三组
怎么做啊??
a b
1 dfad
2 adf
3 fdsf
4 sdf
6 asdfd
8 adfds
10 adsfd
12 adf
按当a>=5,4<a<=10,a>10分三组
怎么做啊??
