2つのカラムに基づいてピボットするSQLロジック

Question

私はテーブル 'AnimalInformation'を持っており、以下のような購入日に基づいてカラムをピボットしたいと考えています。私はピボットで試しましたが、私が必要とするものを正確に得られませんでした。あなたは何か助けてくれますか？

Result should look like 
PurchaseDate | CatInfo| DogInfo | FishInfo | CatDate | DogDate | FishDate 
---------------------------------------------------------------------------------- 
1/1/2016  | Good | Fair | NotGood | 10/10/2016 | 11/10/2016 | 12/10/2016 
2/2/2016  | Bad | Good | Good |  9/9/2016 | 10/9/2016 | 11/9/2016 

---

##Table## 
CREATE TABLE [dbo].[AnimalInformation](
[UniqueId] [int] IDENTITY(1,1) NOT NULL, 
[PurchaseDate] [datetime] NOT NULL, 
[Animal] [nvarchar](50) NOT NULL, 
[HealthDate] [datetime] NOT NULL, 
[AnimalCondition] [nvarchar](50) NOT NULL, 
CONSTRAINT [PK_AnimalInformation] PRIMARY KEY CLUSTERED 
(
[UniqueId] ASC 

)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,     
ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] 
) ON [PRIMARY] 

## Insert Statement ## 
Insert into AnimalInformation values ('1/1/2016' ,'Cat','10/10/2016','Good') 
Insert into AnimalInformation values ('1/1/2016' ,'Dog','11/10/2016','Fair') 
Insert into AnimalInformation values ('1/1/2016' ,'Fish','12/10/2016','Not Good') 

Insert into AnimalInformation values ('2/2/2016' ,'Cat','9/9/2016','Bad') 
Insert into AnimalInformation values ('2/2/2016' ,'Dog','10/9/2016','Good') 
Insert into AnimalInformation values ('2/2/2016' ,'Fish','11/9/2016','Good') 

## My Query ## 
SELECT * FROM 
(
    SELECT 
    PurchaseDate, 
Animal, 
AnimalCondition, 
HealthDate, 
(Animal + 'Info') AnimalHealthInfo, 
(Animal + 'Date') AnimalHealthDate 
FROM 
    AnimalInformation 
) X 

PIVOT (MAX(AnimalCondition) FOR AnimalHealthInfo IN ([CatInfo],[DogInfo],[FishInfo]) 
    ) As P1 
PIVOT (MAX(HealthDate) FOR AnimalHealthDate IN ([CatDate],[DogDate],[FishDate]) 
    ) AS P2 

Answer 1

条件付き集約下に設けられたすべての情報は、あなたがそれを行うことができます1つの方法です。

SELECT 
    PurchaseDate 
    ,MAX(CASE WHEN Animal = 'Cat' THEN AnimalCondition END) as CatInfo 
    ,MAX(CASE WHEN Animal = 'Dog' THEN AnimalCondition END) as DogInfo 
    ,MAX(CASE WHEN Animal = 'Fish' THEN AnimalCondition END) as FishInfo 
    ,MAX(CASE WHEN Animal = 'Cat' THEN HealthDate END) as CatDate 
    ,MAX(CASE WHEN Animal = 'Dog' THEN HealthDate END) as DogDate 
    ,MAX(CASE WHEN Animal = 'Fish' THEN HealthDate END) as FishDate 
FROM 
    AnimalInformation 
GROUP BY 
    PurchaseDate 

その後MikkaRinは右だが、列の名前忘れてしまったあなたやカップルの他の人がしようとしている方法がある。

SELECT 
    PurchaseDate 
    ,MAX(CatI) as CatInfo 
    ,MAX(DogI) as DogInfo 
    ,MAX(FishI) as FishInfo 
    ,MAX(CatD) as CatDate 
    ,MAX(DogD) as DogDate 
    ,MAX(FishD) as FishDate 
FROM 
     (SELECT 
      PurchaseDate 
      ,HealthDate 
      ,AnimalCondition 
      ,Animal + 'I' as AnimalInfo 
      ,Animal + 'D' as AnimalDate 
     FROM 
      AnimalInformation) t 
     PIVOT 
     (
      MAX(AnimalCondition) 
      FOR AnimalInfo IN (CatI,DogI,FishI) 
     ) p 
     PIVOT 
     (
      MAX(HealthDate) 
      FOR AnimalDate IN (CatD,DogD,FishD) 
     ) p2 
GROUP BY 
    PurchaseDate 

または2つのピボット加入：私は個人的に

;WITH cteHealthInfo AS (
    SELECT PurchaseDate, Cat as CatInfo, Dog as DogInfo, Fish as FishInfo 
    FROM 
     (SELECT PurchaseDate, AnimalCondition, Animal 
     FROM 
      AnimalInformation) t 
     PIVOT 
     (
      MAX(AnimalCondition) 
      FOR Animal IN (Cat,Dog,Fish) 
     ) p 
) 

, cteHealthDate AS (
    SELECT PurchaseDate, Cat as CatDate, Dog as DogDate, Fish as FishDate 
    FROM 
     (SELECT PurchaseDate, HealthDate, Animal 
     FROM 
      AnimalInformation) t 
     PIVOT 
     (
      MAX(HealthDate) 
      FOR Animal IN (Cat,Dog,Fish) 
     ) p 
) 

SELECT 
    i.* 
    ,d.CatDate 
    ,d.DogDate 
    ,d.FishDate 
FROM 
    cteHealthInfo i 
    INNER JOIN cteHealthDate d 
    ON i.PurchaseDate = d.PurchaseDate 

は、条件付きアグリゲーションは、このようなケースで最小のコード量で最も柔軟性の高いソリューションを提供します。私はunpivotを使用してピボットを使用して楽しいソリューションを見ましたが、データ型が一貫している必要があります。

Answer 2

SELECT PurchaseDate, 
max([CatInfo]), 
max([DogInfo]), 
max([FishInfo]), 
max([CatDate]) , 
max([DogDate]) , 
max([FishDate]) 
FROM 
(
    SELECT 
    PurchaseDate, 
--Animal, 
AnimalCondition, 
HealthDate, 
(Animal + 'Info') AnimalHealthInfo, 
(Animal + 'Date') AnimalHealthDate 
FROM 
    @AnimalInformation 
) X 

PIVOT (MAX(AnimalCondition) FOR AnimalHealthInfo IN ([CatInfo],[DogInfo],[FishInfo]) 
    ) As P1 
PIVOT (MAX(HealthDate) FOR AnimalHealthDate IN ([CatDate],[DogDate],[FishDate]) 
    ) AS P2 

    group by PurchaseDate