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À
15/11/2007 08:54:38
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
Network:
Windows XP
Database:
Visual FoxPro
Divers
Thread ID:
01268865
Message ID:
01269293
Vues:
10
>>>Is that correct? I thought that SQL aliases have nothing to do with A-J aliases for work areas.
>>>
>>>>It's a bad idea to use one leter meaningless table aliases in a query. It makes the query totally unreadable. It also could be dangerous because letters A-J are reserved for workareas 1-10.
>>
>>From my testing, you are correct: Message#1154483
>
>It's no longer a problem, but at one time, you could get unexpected results with something along these lines:
>
>
>SELECT 1
>USE MyTable && now in workarea A
>
>SELECT ... ;
>  FROM AnotherTable A ;
>  ...
>
>
>VFP would get confused over what A meant.
>
>Tamar

What was that time?
In my experience, (V)FP was NEVER confused in the scenario above. Maybe the programmer, but that's always a possibility.
Doru
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