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VFP6.0 Optimize SQL
Message
De
30/03/2000 12:24:43
Walter Meester
HoogkarspelPays-Bas
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00352764
Message ID:
00352798
Vues:
10
James,
>
>I'd like to speed up my sql select statement and have tried everything I could think of to make it "Rushmore" optimized, to no avail.
>
>Here are two sql's, the first is slow, the second is fast.
>
>
>***5,323 records in 40.03 secs.
>select dam1, yr_bred, name, sex, sire1, booked_to, last_bred, p_b, date_foal, date_died, cause_deat, ;
>price_sold, buy_name, age_rec, life_earn, cl from master where category = "F" and type = "S" or ;
>type = "W" or type = "Y" order by dam1 into table foals nofilter

Just try indexing the fields category and type. Please tell me what results you've got.

Walter,
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