search by date range、users
=============result like this=====================
from 2010-10-01 to 2010-10-07
user num
okmAdmin 24
test0 34
test1 51
... ...
=============result like this=====================
from 2010-10-01 to 2010-10-07
user num
okmAdmin 24
test0 34
test1 51
... ...