Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Wed, 14 Apr 2004 @ 11:42:07 GMT


     
  <Prev Next>   <<First <Prev Next> Last>>  


Subj:   Re: Selecting records with Max Date
 
From:   Arnaud_Balat

If I understand correctly your request:

I will assume that your target col cannot be included in the "group by" clause so I would see it in two steps:

SELECT A.date_col, A.definition_col, A.target_col FROM mytable A
WHERE (A.date_col, A.definition_col) in
        (
                SELECT MAX(B.date_col), B.definition_col FROM mytable B
                WHERE B.definition_col in (42, 44, 55)
                GROUP BY B.definition_col
        )
;

Don't know if it is the most efficient query but it should return one record per definition (if your PK is a combination of the definition and date cols) with the max date.


A.



     
  <Prev Next>   <<First <Prev Next> Last>>  
 
 
 
 
 
 
 
 
  
  Top Home Privacy Feedback  
 
 
Copyright for the TeradataForum (TDATA-L), Manta BlueSky    
Copyright 2016 - All Rights Reserved    
Last Modified: 27 Dec 2016