1
2
3
4
select count1+count2
from
(select count(*) count1 from one) a,
(select count(*) count2 from two) b
或
1
2
3
4
5
select sum(a.count1)
from
(select count(*) count1 from one
union all
(select count(*) from two) a
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024