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Select MIN date from view

Posted on 2004-03-24
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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
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Question by:HawkeyeNash
2 Comments
 
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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
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Author Comment

by:HawkeyeNash
ID: 10671811
Thanks, Chris.

Had the join in the wrong place.

Much appreciated.
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