Pivot Table 有条件

Question

想想我有一个这样的 table

ID  DEPARTMENT
1   Production
1   IT
2   Sales
2   Marketing
2   Sales

我怎样才能得到如下结果

ID Production IT Sales Marketing
1  1          1  0     0
2  0          0  1     1
2  0          0  1     0

您会注意到，在 ID 号 2 'Sales' 的原始 table 中，部门是重复的，因此每当重复部门时，旋转的 table 中应该有另一个条目。

Answer 1

一种方法是在旋转之前添加 row_number。
然后枢轴将不只是按 ID 分组。

SELECT ID, Production, IT, Sales, Marketing
FROM
(
  SELECT ID, DEPARTMENT
  , ROW_NUMBER() OVER (PARTITION BY ID, DEPARTMENT ORDER BY ID) AS RN
  FROM yourtable t
) Src
PIVOT 
(
   COUNT(*)
   FOR DEPARTMENT IN (
     'Production' AS Production,
     'IT' AS IT,
     'Sales' AS Sales, 
     'Marketing' AS Marketing
    ) 
) Pvt

ID	PRODUCTION	IT	SALES	MARKETING
1	1	1	0	0
2	0	0	1	1
2	0	0	1	0

db<>fiddle here

Pivot Table 有条件

Pivot Table with a condition

sql

oracle

pivot

group-by

case