?
Solved

How to order Highest and lowest value rows alternatively in SQL Server ?

Posted on 2016-11-18
4
Medium Priority
?
91 Views
Last Modified: 2016-11-18
Sample data-

CREATE TABLE #emp_records
(
 Id INT,
 Name VARCHAR(80),
 Salary NUMERIC(8, 2)
)
GO
 
INSERT INTO #emp_records
(Id, Name, Salary)
VALUES(1, 'A', 7000),
(2, 'B', 30000),
(3, 'C', 6000),
(4, 'D', 10000),
(5, 'E', 800),
(6, 'F', 500)

Desired Output :-

Id      Name      Salary
2      B      30000.00
6      F      500.00
4      D      10000.00
5      E      800.00
1      A      7000.00
3      C      6000.00
0
Comment
Question by:Mayank Tripathi
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 30

Expert Comment

by:Pawan Kumar
ID: 41892727
Do you always have even number in this case ? or we can have odd number also ?
0
 

Author Comment

by:Mayank Tripathi
ID: 41892728
Thanks Pawan, by the way the rows are not fixed.
0
 
LVL 30

Accepted Solution

by:
Pawan Kumar earned 2000 total points
ID: 41892731
try..

---

DECLARE @Count INT = 0
SELECT @Count = COUNT(1) FROM emp_records
DECLARE @limit INT = CEILING(@Count / 2.0)

;WITH CTE AS
(
	SELECT * FROM
	(
		SELECT * , ROW_NUMBER() OVER(ORDER BY Salary DESC) rnk FROM emp_records
	)B1 
	WHERE rnk <= @limit
)
,CTE1 AS 
(
	SELECT * FROM
	(
		SELECT *, ROW_NUMBER() OVER(ORDER BY Salary ASC) rnk FROM emp_records
	)B2
	WHERE rnk <= @limit - (@Count % 2.0) 
)
SELECT * FROM CTE c
UNION ALL
SELECT * FROM CTE1
ORDER BY rnk ASC, Salary DESC

Open in new window


Hope it helps !
0
 

Author Closing Comment

by:Mayank Tripathi
ID: 41892793
Thanks.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.

718 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question