SQL 超过 week_no 的数据进入列

Question

我想转置以下 SQL 结果：

A总和 week_no
a 1 22
a 2 24

像这样变成table：

Aweek_22week_23week_24
a1 0 2

我如何在 Oracle 上实现这一点？谢谢！（我应该考虑多年来的每周数据，所以构建案例不是一种选择）

Answer 1

大多数情况下，我假设此查询是针对您的示例数据，它将填补第 1 周的空白并转置结果集

Select A,[22] [week_22],[23] [week_23],[24] [week_24] from (
Select A,Sum,Weekno from Table 
UNION
Select * from ( 
SELECT  top 1 t1.A,'' AS Sum,t1.Weekno-1 AS Weekno
FROM     Table t1
LEFT OUTER JOIN 
         Table  t2 
ON       t2.Weekno=t1.Weekno-1 
WHERE    t2.Weekno IS NULL 
AND      t1.Weekno > 0     
ORDER BY t1.Weekno desc )T)TT
PIVOT (MAX(SUM) FOR WEEKNO IN ([22],[23],[24]))PVT

SQL 超过 week_no 的数据进入列

SQL data over week_no into columns

sql

exasolution