Top 3 Ränge in 3 verschiedenen Spalten in SQL Server

Question

Folgende ist meine Tabelle in SQL Server

ID  NAME SALARY 
10  A  10 
10  B  5 
10  C  20 
10  D  20 
11  E  40 
11  F  40 
11  G  30 
11  H  50 
12  I  50 
12  J  35 

Mein Ziel jeder Partition entspricht, sechs weitere Spalten hinzufügen FIRST_VALUE, SECOND_VALUE THIRD_VALUE first_rank, second_rank, third_rank entsprechend jeder ID. Die Ausgabe sollte wie folgt aussehen wie folgt:

ID NAME SALARY R1 R2 R3  R1_name R2_name R3_name 
10 A  10  5 10 20  B   A   C 
10 B  5  5 10 20  B   A   C 
10 C  20  5 10 20  B   A   C 
10 D  20  5 10 20  B   A   C 
11 E  40  30 40 40  G   E   F 
11 F  40  30 40 40  G   E   F 
11 G  30  30 40 40  G   E   F 
11 H  50  30 40 40  G   E   F 
12 I  50  35 50 NULL J   I   NULL 
12 J  35  35 50 NULL J   I   NULL 

Es folgt der Einsatz Abfrage:

CREATE TABLE EMP(ID NVARCHAR(10), NAME NVARCHAR(20), SALARY MONEY) 

INSERT INTO EMP 
VALUES 
(10, 'A', 10),(11, 'E',40),(10,'B',5),(11,'F',40),(12,'I',50) 
,(10,'C',20),(11,'G',30),(12,'J',35),(10,'D',20),(11,'H',50) 

Vielen Dank im Voraus.

Answer 1

ziemlich hässlich, aber es funktioniert, könnten Sie versuchen

DECLARE @EMP AS TABLE(ID NVARCHAR(10), NAME NVARCHAR(20), SALARY MONEY) 

INSERT INTO @EMP 
VALUES 
(10, 'A', 10),(11, 'E',40),(10,'B',5),(11,'F',40),(12,'I',50) 
,(10,'C',20),(11,'G',30),(12,'J',35),(10,'D',20),(11,'H',50) 


;WITH temp AS 
(
    SELECT e.* , row_number() over(partition by e.ID ORDER BY e.SALARY ASC) AS Rn 
    FROM @EMP e 
) 
SELECT e.*, t1.SALARY AS R1, t1.Name AS R1_Name, t2.SALARY AS R2, t2.Name AS R2_Name, t3.SALARY AS R3, t3.Name AS R3_Name 
FROM @EMP e 
LEFT JOIN temp t1 ON e.ID = t1.ID AND t1.Rn = 1 
LEFT JOIN temp t2 ON e.ID = t2.ID AND t2.Rn = 2 
LEFT JOIN temp t3 ON e.ID = t3.ID AND t3.Rn = 3 
ORDER BY e.ID ASC 

Demo Link: Rextester

Answer 2

Wir können Ihre gewünschte Ausgabe tatsächlich erreichen, indem eine einzige Join zu einem WAK zu tun, die die Gehälter für jede ID Reihen .

WITH cte1 AS (
    SELECT ID, NAME, SALARY, 
      ROW_NUMBER() OVER (PARTITION BY ID ORDER BY SALARY) rn 
    FROM EMP 
), 
cte2 AS (
    SELECT 
     ID, 
     MAX(CASE WHEN rn = 1 THEN SALARY END) AS R1, 
     MAX(CASE WHEN rn = 2 THEN SALARY END) AS R2, 
     MAX(CASE WHEN rn = 3 THEN SALARY END) AS R3, 
     MAX(CASE WHEN rn = 1 THEN NAME END) AS R1_name, 
     MAX(CASE WHEN rn = 2 THEN NAME END) AS R2_name, 
     MAX(CASE WHEN rn = 3 THEN NAME END) AS R3_name 
    FROM cte1 
    GROUP BY ID 
) 
SELECT 
    t1.ID, 
    t1.NAME, 
    t1.SALARY, 
    t2.* 
FROM EMP t1 
INNER JOIN cte2 t2 
    ON t1.ID = t2.ID 

Ausgang:

Demo hier:

Rextester

Answer 3

;WITH TOUpdate AS 
(
    SELECT ID, 
     MAX(case when RN=1 THEN SALARY ELSE 0 END) AS R1, 
     MAX(case when RN=2 THEN SALARY ELSE 0 END) AS R2, 
     MAX(case when RN=3 THEN SALARY ELSE 0 END) AS R3, 
     MAX(case when RN=1 THEN Name ELSE NULL END) AS R1_Name, 
     MAX(case when RN=2 THEN Name ELSE NULL END) AS R2_Name, 
     MAX(case when RN=3 THEN Name ELSE NULL END) AS R3_Name 
    FROM(
     SELECT *,ROW_NUMBER() OVER (PARTITION BY ID ORDER BY SALARY) AS RN 
     FROM @EMP 
       ) X 
WHERE X.RN<4 
GROUP BY ID 
      ) 

SELECT * 
FROM @EMP E 
INNER JOIN TOUpdate U 
ON E.ID=U.ID