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Probably an odd question
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00744557
Message ID:
00744769
Vues:
12
Hi Tamar,

That was a mistype on my part -- I meant to say *without* any type of join condition.

My bad -- appreciate you correcting my goof (g)

>>> Additionally, you can quickly cause a Cartesian product if you use SELECT * with any kind of join condition. <<
>
>SELECT * really has no to do with a Cartesian join. A Cartesian join occurs when you join two tables and don't provide a join condition. In that case, every record from the first table is matched with every record from the second table.
>
>However, in general, it is better to select only the fields you need, particularly if VFP has to create a disk presence for the result.
>
>Tamar
Evan Pauley, MCP
Positronic Technology Systems LLC
Knoxville, TN

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