我的表结构:
cust_id | action | action_count
--------+----------+-------------
1 | Approved | 15
2 | Approved | 25
1 | Rejected | 6
2 | Pending | 20
2 | Rejected | 7
我必须得到如下查询结果:
cust_id | Approved | Pending | Rejected
--------+----------+---------+---------
1 | 15 | 0 | 6
2 | 25 | 20 | 7
最佳答案
试试这个查询
select
cust_id,
max(if(action='Approved', action_count, 0)) as Approved,
max(if(action='Rejected', action_count, 0)) as Rejected,
max(if(action='Pending', action_count, 0)) as Pending
from
tbl
group by
cust_id
FIDDLE
| CUST_ID | APPROVED | REJECTED | PENDING |
-------------------------------------------
| 1 | 15 | 6 | 0 |
| 2 | 25 | 7 | 20 |
关于mysql - 查询行作为列(MySQL)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16850214/