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Trying to GROUP BY MAX() ?
Message
De
18/06/1998 09:29:00
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00109215
Message ID:
00109468
Vues:
39
Then, I'm not sure I understand your question.

> I want all of the newest records and ignore older matching records

Please define "newest records" (since a given date or since the last query?).

And what do you mean by "matching records"? Are two or more tables involved?

>Thanks for the idea, but not quite what I had in mind. I want all of the newest records and ignore older matching records (matching on MailingListId and ListSelectId)
>
>>SELECT TOP 10 MailingListId, ListSelectId, ;
>> StateCountAsOF, ;
>> StateCountId ;
>> FROM StateCount ;
>> INTO CURSOR zStateCount;
>> ORDER BY StateCountAsOf DESC
>>
>>HTH
>>
>>>I'm trying to use the following SELECT to get me the most current record(s) from my table based on the DateTime field StateCountAsOf.
>>>The field StateCountId is the Key field for each record.
>>>
>>>SELECT MailingListId, ListSelectId, ;
>>> MAX(StateCountAsOF) AS StateCountAsOF, ;
>>> StateCountId ;
>>> FROM StateCount ;
>>> GROUP BY MailingListId, ListSelectId ;
>>> INTO CURSOR zStateCount
>>>
>>>When I run my SELECT I get the most current date but the field ListSelectId (which is a key into another table is for another record). I tried GROUP BY MAX(StateCountAsOf) and HAVING BY MAX(StateCountAsOf) but get syntax errors. I can't use StateCountId in my GROUP BY because I then get all records (since it is the key field).
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