?
Solved

sql query help getting the correct record

Posted on 2014-11-14
5
Medium Priority
?
85 Views
Last Modified: 2014-12-02
I have 2 table. 1 table keep all base files. The second table keep track of all uploaded files.

I need to pull only latest records for unique docKey.

In reality i need only record 2 and 3

The attached file has a screen shotscreen capture
0
Comment
Question by:erikTsomik
[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
5 Comments
 
LVL 5

Accepted Solution

by:
TONY TAYLOR earned 2000 total points
ID: 40443742
SELECT IM.docKey, MU.filename, IM.name, MU.uploadID, MU.UploadedWhen 
FROM 
	InsManual IM WITH (NOLOCK) 
	OUTER APPLY (
		SELECT TOP 1 * 
		FROM InsManualUploads MUS WITH (NOLOCK) 
		WHERE MUS.docKey = IM.docKey 
		ORDER BY MUS.UploadedWhen DESC
	) MU 
ORDER BY IM.docKey

Open in new window

0
 
LVL 19

Author Comment

by:erikTsomik
ID: 40443765
can you explain outer apply how it works
0
 
LVL 5

Expert Comment

by:TONY TAYLOR
ID: 40443791
This is the best resource that I am readily familiar with for that:
http://www.mssqltips.com/sqlservertip/1958/sql-server-cross-apply-and-outer-apply/

It is a handy trick.  CROSS APPLY might also work for you.  Without knowing your data/project intimately, it would be hard to say.
0
 
LVL 32

Expert Comment

by:awking00
ID: 40444587
select dockey, filename, name, uploadid, uploadedwhen from
(select im.dockey, mu.filename, im.name, mu.uploadid, mu.uploadedwhen,
 row_number() over (partition by mu.dockey order by mu.uploadedwhen desc) rn
 from
 insmanual im inner join insmanualuploads mu
 on im.dockey = mu.dockey) as x
where x.rn = 1
0
 
LVL 51

Expert Comment

by:Vitor Montalvão
ID: 40446745
Should be as simple as:
SELECT IM.docKey, MU.filename, IM.name, MAX(MU.UploadedWhen)
FROM InsManual IM 
INNER JOIN InsManualUploads MUS ON MUS.docKey = IM.docKey 
GROUP BY IM.docKey, MU.filename, IM.name
ORDER BY IM.docKey

Open in new window

0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
Via a live example combined with referencing Books Online, show some of the information that can be extracted from the Catalog Views in SQL Server.
Via a live example, show how to set up a backup for SQL Server using a Maintenance Plan and how to schedule the job into SQL Server Agent.

764 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