Solved

Select MIN date from view

Posted on 2004-03-24
2
306 Views
Last Modified: 2008-02-26
I have a view (vwHistory).  This view is a history of events that have happened to a claim.  It looks something like this:

vwHistory
ClaimNumber (varchar)
EventDate (DateTime)
Attribute1 (varchar)
Attribute2 (varchar)
Attribute3 (varchar)

ClaimNumber and EventDate together make a composite key.

I need a select statement that will give me all of the data values for the earliest EventDate for a particular claim number.

For example if my table looks like this:

ClaimNumber   EventDate     Att1        Att2      Att3
1                     1/1/04          A            B          C
1                     1/2/04          D            E          F
1                     1/3/04          G            H          I
2                     1/1/04          J             K          L
2                     1/2/04          M           N          O
3                     1/5/04          P            Q          R

Then my result set would look like this:

ClaimNumber   EventDate     Att1        Att2      Att3
1                     1/1/04          A            B          C
2                     1/1/04          J             K          L
3                     1/5/04          P            Q          R


Attributes 1 - 3 may or may not be identical for each row.


Thanks in advance,
HawkeyeNash
0
Comment
Question by:HawkeyeNash
2 Comments
 
LVL 7

Accepted Solution

by:
ChrisFretwell earned 125 total points
ID: 10671741
Here's one way

select vw.claimnumber, vw.eventdate, vw.att1, vw.att2,vw.att3
from vwhistory vw join
(select claimnumber, min(eventdate) as mindate from vwhistory group by claimnumber) as v2 on vw.claimnumber = v2.claimnumber and vw.eventdate = v2.mindate
order by vw.claimnumber
0
 

Author Comment

by:HawkeyeNash
ID: 10671811
Thanks, Chris.

Had the join in the wrong place.

Much appreciated.
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

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

Suggested Solutions

Nowadays, some of developer are too much worried about data. Who is using data, who is updating it etc. etc. Because, data is more costlier in term of money and information. So security of data is focusing concern in days. Lets' understand the Au…
JSON is being used more and more, besides XML, and you surely wanted to parse the data out into SQL instead of doing it in some Javascript. The below function in SQL Server can do the job for you, returning a quick table with the parsed data.
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
Viewers will learn how the fundamental information of how to create a table.

821 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