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SELECT statement executes very slow
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23/01/2009 17:42:25
Raza Malik
Universal Accounting Software
Edgewater, New Jersey, États-Unis
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP2
Divers
Thread ID:
01376652
Message ID:
01376660
Vues:
17
Hi Raza,

You either create an index tag on substr(itm_numb, 1, 3) (or left(itm_numb, 3) and change the where to reflect this) or if you already have an index on itm_numb you can just remove the function altogether and leave it as itm_numb = 'STI' (you need to have SET ANSI OFF)
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?

"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare

"To die for a religion is easier than to live it absolutely"
Jorge L. Borges
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