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Index on DELETED() creating problems
Message
De
15/09/2006 06:27:58
 
 
À
15/09/2006 05:39:34
Information générale
Forum:
Visual FoxPro
Catégorie:
FoxPro 2.x
Versions des environnements
Visual FoxPro:
FoxPro Dos
OS:
Windows XP SP2
Network:
Windows XP
Database:
Visual FoxPro
Divers
Thread ID:
01154000
Message ID:
01154005
Vues:
17
>Long time back I had read that on creating an Index with expression DELETED() speeds up the query (reports). We tried that & is giving lot of problems (in a stable application) like not recognising the cursor ( but table is fine), SELECT-SQL is behaving strangly ( unchanged code since 2 years).
>
>The tag name is DELETED.
>
>Anyone using it, tips ?
>
>Rakesh

Whether an index on deleted() will speed up your query or not, depends on how many records are selcted in relation to the total number of records. In some case it can slow down the query considerably, so the general recommendation is NOT to include such a tag. However, with VFP9 this is no longer a problem, because you have a new binary index type.
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