求mysql，sum as 查询语句！

求mysql，sum as 查询语句！

先筛选出销售员A和B，然后按销售员分组汇总销售额就可以了。请参考下列SQL语句：

select 销售员,sum(销售额) as 个人销售总额
from T where 销售员 in ('A','B')
group by 销售员;2017-07-20