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SQL Join on Most Recent Record

Posted on 2007-11-20
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Last Modified: 2010-05-18
I have two tables in SQL, table one has information, and table two has more dynamic information that is related to table one.  

Table1
ID
LRSN
INFO
MOREINFO

Table 2
ID
LRSN
DESCRIPTION
LAST_UPDATE

I would like to join the two tables on LRSN, and pull the Description of the most recent Last_Update record from table two.  Can someone help me out with this relationship?  Thanks in advance for the help!
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Question by:jayh99
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3 Comments
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 50 total points
ID: 20319619
select ...
from table1 t1
join table2 t2
  on t1.lrsn = t2.lrsn
 and t2.last_update = ( select max(i.last_update) from table2 i where i.lrsn = t2.lrsn )
0
 
LVL 75

Expert Comment

by:Aneesh Retnakaran
ID: 20319625
SELECT *
FROM Table1 t1
INNER JOIN Table2 t2 ON t1.LRSN = t2.Lrsn
WHERE T2.Last_Update = (SELECT MAx(last_update) from tabel2 where lrsn = t2.lrsn)
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LVL 1

Author Closing Comment

by:jayh99
ID: 31410115
Excellent!  Thanks for the quick response!
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