Oracle 行到列的转换

Posted 2023-05-09

【中文标题】Oracle 行到列的转换

【英文标题】：Oracle Rows to Column Transformation

【发布时间】：2012-03-06 10:53:53

【问题描述】：

我有一张桌子

select * from table

返回的值是

login id | status_name | count
===============================
admin    | open        |     3
admin    | closed      |     5
test     | inprogress  |    10
test     | open        |    10
test     | closed      |    11
user1    | closed      |     5
user1    | pending     |    10

如何将这些数据从行传输到列？ 我想要这种方式

login_id | open | closed | inprogress | pending
================================================
admin    |    3 |      5 |          0 |       0
test     |   10 |     10 |         10 |       0
user1    |    0 |      5 |          0 |      10

【问题讨论】：

也可以尝试查看 PIVOT：例如 ***.com/questions/4841718/oracle-sql-pivot-query

【参考方案1】：

select login_id
     , sum(case when status_name='open' then count end) open
     , sum(case when status_name='closed' then count end) closed
     , sum(case when status_name='inprogress' then count end) inprogress
     , sum(case when status_name='pending' then count end) pending
from table
group by login_id

【讨论】：

嗨...感谢您提供查询，但计数未显示...还有什么方法可以写动态