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Sys(3054,1) shows partial optimization??
Message
From
21/11/1999 03:26:35
Walter Meester
HoogkarspelNetherlands
 
 
To
20/11/1999 10:23:29
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Miscellaneous
Thread ID:
00293130
Message ID:
00293604
Views:
33
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,
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