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Max date and status from child table
Message
De
14/01/2005 10:25:12
 
 
À
14/01/2005 09:01:08
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
Visual FoxPro
Divers
Thread ID:
00977172
Message ID:
00977205
Vues:
20
This message has been marked as the solution to the initial question of the thread.
>I have the following tables
>
>claims.dbf
>claim_id I
>....
>
>
>claims2.dbf
>claim2_id I
>claims_ID I
>fromdate D
>status C(10)
>....
>
>
>for each claims.claim_id I need the max(claims2.fromdate) and the associated status for this date for a given data of ldDate
>
>meaning: what was the status of claims 123 ... 456 on 06/30/2003 for example
>

In VFP 9, you can do something like:

SELECT Claims.Claim_ID, MaxClaim.FromDate, Claims2.Status ;
FROM Claims ;
JOIN (SELECT Claims_ID, MAX(FromDate) AS FromDate ;
FROM Claims2 ;
GROUP BY Claims_ID) MaxClaim ;
ON Claims.Claim_ID = MaxClaim.Claims_ID ;
JOIN Claims2 ;
ON Claims2.Claims_ID = MaxClaim.Claims_ID ;
AND Claims2.FromDate = MaxClaim.FromDate

You may have to tweak that a bit, but it should give you the idea.

Tamar
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