sql取值selectsum(weight)fromdbv_win_2whererecorddate 2007-01-17怎么样把sum(weigth)总的质量取出来啊
sql取值
select sum(weight) from dbv_win_2 where recorddate= '2007-01-17 '
怎么样把 sum(weigth) 总的质量取出来啊
[解决办法]
select sum(weight) as XXX 不是已经取出来了吗