有如下表:
|
a |
b |
c |
|
01 |
100 |
1 |
|
0101 |
100 |
2 |
|
0101 |
100 |
3 |
|
010101 |
100 |
4 |
用一条SQL语句得出如下结果(逐级汇总)
|
a |
Sum(b) |
|
01 |
400 |
|
0101 |
300 |
|
010101 |
100 |
select distinct a, (select sum(b) from tname where a like t.a || '%')
from tname t