数据窗口排序有关问题

数据窗口排序问题rqbz2014-01-0112014-01-0112014-01-0202014-01-0212014-01-0302014-01-0312014-01-09020

数据窗口排序问题
rq               bz
2014-01-01        1
2014-01-01        1
2014-01-02        0
2014-01-02        1
2014-01-03        0
2014-01-03        1
2014-01-09        0
2014-01-09        1


排序结果
2014-01-02        0
2014-01-03        0
2014-01-09        0
2014-01-09        1
2014-01-03        1
2014-01-02        1
2014-01-01        1
2014-01-01        1
怎么做到呢
[解决办法]
先按日期  再按BZ排序?