需要识别每个成员的团队字段中的'a'的出现以及出现日期(作为一个组)。数据样本如下:
**member & date**| **Team**
a010112| a
a010112| b
a010112| c
a010112| d
b010112| b
b010112| b
c010112| a
c010112| b
c010112| c
所需的结果如下:
**member & date| **team**| **Occurrence of 'a' per member & date**
a010112| a| yes
a010112| b| yes
a010112| c| yes
a010112| d| yes
b010112| b| no
b010112| b| no
c010112| a| yes
c010112| b| yes
c010112| c| yes
计算字段 - 每个成员发生'a'和&日期分组是来自数据仓库查询的计算字段,通过case语句/分区by / over。是否可以为所需的语法提供一些帮助?
谢谢,
答案 0 :(得分:1)
试试这个
Declare @t Table ([Member and Date] Varchar(50), Team Varchar(10))
Insert Into @t Values
('a010112','a'),('a010112','b'),('a010112','c'),('a010112','d'),
('b010112','b'),('b010112','b'),
('c010112','a'),('c010112','b'),('c010112','c')
SELECT
x.[Member and Date]
,x.[Team]
,[Occurrence of 'a' per member & date] = CASE WHEN y.[Member and Date] IS NULL THEN 'No' ELSE 'Yes' END
From @t x
Left Join(Select Distinct [Member and Date]
From @t Where Team = 'a')y
On x.[Member and Date] = y.[Member and Date]