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Always trips me up!
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Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP1
OS:
Windows XP SP2
Database:
Visual FoxPro
Divers
Thread ID:
01233129
Message ID:
01233142
Vues:
14
>>Hi all
>>
>>This kind of query should be common yet I often seem to break it.
>>
>>Two tables
>>
>>Members, StatusHistory.
>>
>>Status history has the member id the status and the date of the change.
>>
>>I want to grab member info and the current status and change date as of this moment for each member.
>>
>>Please help.
>>
>>Thanks!
>
>Do you mean the maximum date in StatusHistory? If yes, there are several ways:
>
>select * from Members ;
>inner join (select Id, Max(date) from StatusHistory group by ID) as CurrentStatus ;
>on Members.ID = CurrentStatus.ID
>
>Let me write others after the break.

Ha, I see that one more way is already shown by Sergey.

And my favorite one based on the idea of Igor Korolev I'll show later.
If it's not broken, fix it until it is.


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