将不同的值分隔到列中

Question

大家好，我对 SQL 很陌生。我有一个表（TABLE1），有两列，如下所示

Name age
--------
jim  18
jim  21
dave 18
dave 18
john 23
john 41

我需要在 SSMS 中创建一个视图，在下面的单独列中列出每个名称的不同年龄

Jim  Dave  John
---------------
18   18     23
21          41

我尝试过类似的子查询

SELECT DISTINCT AGE FROM TABLE1 WHERE NAME = JIM

但是我遇到子查询不能返回多个值。

Answer 1

你可以使用row_number() & 做聚合：

select max(case when name = 'jim' then age end) as jim,
       max(case when name = 'dave' then age end) as dave,
       max(case when name = 'john' then age end) as john
from (select t.*, row_number() over (partition by name order by age) as seq
      from table t
     ) t
group by seq;