Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Sys(3054,1) shows partial optimization??
Message
De
21/11/1999 03:26:35
Walter Meester
HoogkarspelPays-Bas
 
 
À
20/11/1999 10:23:29
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00293130
Message ID:
00293604
Vues:
30
Sanjay,

>Problem solved. When Set Deleted is off then it shows full optimized no matter whether you have indexed on deleted() or not.
>
>Sanjay Chavda

TIP: keep in mind that full optimization does not neccesaraly reaches the maximum performance. Sometimes added indexes are not *selective* enough and only can slow down performance. In most cases this applies to the DELETED() index tag when not having many deleted records. So in most cases 'Partial optimized queries' are simply the best solution. How to determine which indexes you need ?? I'm afraid you'll have to a lot of testing to determine which indexes you actually need. Remember, the less indexes the better.

A half a year ago a FPA article complete describes this issue.

Walter,
Précédent
Répondre
Fil
Voir

Click here to load this message in the networking platform