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Very Poor Performance of SQL on Local Table
Message
 
À
12/02/2002 11:34:58
Jay Johengen
Altamahaw-Ossipee, Caroline du Nord, États-Unis
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00618884
Message ID:
00619005
Vues:
18
This message has been marked as a message which has helped to the initial question of the thread.
>I have a view of a database that is taking almost 2 minutes to complete. I copied the SQL, modified it, and am using the resulting statement below to test with.
>
>I am only selecting 93,794 out of 141,642 records on a table (belongs to a database) on a local drive. It still is taking between 30 seconds and 1 minute to complete. There are already various indexes on the base table and one specifically for FileType. I have reindexed everything, validated the database and done everything I know to do. Why would this take so long to run? Thanks!
>
>
>SELECT * FROM data\Employee.dbf WHERE Employee.filetype = "EMPLOYEE"
>
>
>Regards, Renoir

Renoir,

You may want to have the table already opened and/or limit the fields that are retrieved.

Doug
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