Sql 如何以自定义格式检索数据 我检索了一些数据,如下所示(图01)
我使用了这个查询:Sql 如何以自定义格式检索数据 我检索了一些数据,如下所示(图01),sql,sql-server,Sql,Sql Server,我使用了这个查询: SELECT TOP (3) no, co, cdate, year FROM main_backup WHERE (no = 41505) ORDER BY cdate DESC 但我想要这样,就像下面这种类型(图02) 您可以使用条件聚合和窗口函数: select no, max(case when seqnum = 1 then total end) as total_1, max(case when seqnum = 1 then
SELECT TOP (3) no, co, cdate, year
FROM main_backup
WHERE (no = 41505)
ORDER BY cdate DESC
您可以使用条件聚合和窗口函数:
select no,
max(case when seqnum = 1 then total end) as total_1,
max(case when seqnum = 1 then cdate end) as date_1,
max(case when seqnum = 2 then total end) as total_2,
max(case when seqnum = 2 then cdate end) as date_2,
max(case when seqnum = 3 then total end) as total_3,
max(case when seqnum = 3 then cdate end) as date_3
from (select t.*,
row_number() over (partition by no order by cdate desc) as seqnum
from t
) t
group by no
您可以使用条件聚合和窗口函数:
select no,
max(case when seqnum = 1 then total end) as total_1,
max(case when seqnum = 1 then cdate end) as date_1,
max(case when seqnum = 2 then total end) as total_2,
max(case when seqnum = 2 then cdate end) as date_2,
max(case when seqnum = 3 then total end) as total_3,
max(case when seqnum = 3 then cdate end) as date_3
from (select t.*,
row_number() over (partition by no order by cdate desc) as seqnum
from t
) t
group by no