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Speeding up a query
Message
De
04/10/2001 14:03:52
 
 
À
04/10/2001 13:59:24
Jerry Tovar
Dana Corporation Dana It
Maumee, Ohio, États-Unis
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00564341
Message ID:
00564349
Vues:
13
>Is there a way to improve the speed of this query?
>
>SELECT *
>FROM tablename ;
>WHERE RECNO() >= lnrecno ;
>INTO CURSOR mycursor
>
>I am trying to select the last X number of records from a table, but as the table grows, this SELECT statement slows down. Is there a way of improving the speed or another way to select just the last X number of records from a table?
>
>Thanks
>
>Jerryt

If you create an index on recno(), it think Rushmore can kick in (I'm not sure, though).

However, it may be better to have a surrogate primary key field that you do this against.
Steve Gibson
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