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Need Help with SQL Statement
Message
De
20/09/1997 11:40:31
 
 
À
20/09/1997 10:25:12
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00050724
Message ID:
00050906
Vues:
44
>>
>>SELECT * FROM Quotes WHERE ;
>> DTOC(Date)+Customer IN ;
>> (SELECT MAX(DTOC(Date))+Customer FROM Quotes)
>
>Yes, but you still have two SQL-SELECTs (even if one is embeded). Still, yours should be faster than 2 separate SELECTs.
>
I left off the GROUP BY in the above statement. Sorry. It was late. I'll use that as an excuse.
Anyway it should have been

>SELECT * FROM Quotes WHERE ;
> DTOC(Date)+Customer IN ;
> (SELECT MAX(DTOC(Date))+Customer FROM Quotes GROUP BY Customer)

I don't know about the speed of nested selects vs. seperate selects.
But as you said I think the single statment would be faster.
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