[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

Selecting a record by row number in MS SQL

Posted on 2002-06-07
7
Medium Priority
?
436 Views
Last Modified: 2008-03-04
How can I achieve the following in MS SQL ?
a) Selecting a record from the Nth position(row) of a table.
b) selecting a record which is between nth and mth position in a SQL server table.

Assuming table is ordered with a key, which can be varchar. We won;t be knowing the key value, but only the position.

In Oracle we can use rownum. what are options in MS SQL ?

Thanks in advance
Renjith
0
Comment
Question by:renjith
7 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 7061976
either
* insert all the key values to a table with autonumber and key information, and then select with join.
* using a cursor (very slooooooooooooow)

CHeers
0
 
LVL 71

Expert Comment

by:Éric Moreau
ID: 7061995
something like this:

select TOP 5 *
from
     (select TOP 25 *
     from StatutImportation
     order by ID ASC) AS AA
order by ID DESC
0
 
LVL 1

Accepted Solution

by:
johan_brohn earned 200 total points
ID: 7062163

To get the N:th row

SELECT TOP 1 Column
FROM (SELECT TOP [N] Column
      FROM Table
      ORDER BY Column ) AS Alias
ORDER BY Column DESC

To get N:th thru M:th row sorted by Column

SELECT *
FROM (SELECT TOP [M - N + 1] Column
      FROM (SELECT TOP M Column
            FROM Table
            ORDER BY Column) AS Alias
      ORDER BY Column DESC) AS Alias
ORDER BY Column
0
The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

 
LVL 7

Expert Comment

by:lozzamoore
ID: 7062165
You can also use a scalar query on the table using the ordered key to produce rownum like so:

select n1.*, (select count(id) from nthtest as n2 where n2.id<=n1.id) as rownum
from nthtest n1


This will probably run slow on big tables though.

Cheers,
0
 
LVL 71

Expert Comment

by:Éric Moreau
ID: 7128840
Any progress?
0
 
LVL 71

Expert Comment

by:Éric Moreau
ID: 7297418
This question appears to be abandoned. A question regarding it will be left in the CleanUp
area; if you have any comment about the question, please leave it here.

Unless there is objection or further activity, one of the moderators will be asked to accept the comment
of <emoreau>.

The link to the Community Support area is:
http://www.experts-exchange.com/jsp/qList.jsp?ta=commspt

DO NOT ACCEPT THIS COMMENT AS AN ANSWER.
0
 
LVL 5

Expert Comment

by:Netminder
ID: 7373254
0

Featured Post

Learn to develop an Android App

Want to increase your earning potential in 2018? Pad your resume with app building experience. Learn how with this hands-on course.

Question has a verified solution.

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

Ready to get certified? Check out some courses that help you prepare for third-party exams.
One of the most important things in an application is the query performance. This article intends to give you good tips to improve the performance of your queries.
This videos aims to give the viewer a basic demonstration of how a user can query current session information by using the SYS_CONTEXT function
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.
Suggested Courses

590 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