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Slow views
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De
07/08/1998 17:32:29
Cetin Basoz
Engineerica Inc.
Izmir, Turquie
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Gestionnaire d'écran & Écrans
Titre:
Divers
Thread ID:
00124958
Message ID:
00124961
Vues:
18
>Howdy,
>I'm using VFP5.0a.
>
>I've got a view that looks like this: create sql view "lvclientcharges" as select trim(clast)+', '+trim(cfirst),csac_id,chosp_id,dbirth,dcontact,nclient_id from clients where nclient_id in (select nclient_id from charge_visits) order by clast,cfirst
>
>The Clients table has 49,000ish records and has indexes on the nclient_id and deleted() and cfirst and clast fields - to name a few. The Charge_visits table has 41,000ish records with indexes on nClient_id and deleted() also to name a few. This view takes at least 1 minute to run. I'd like to speed it up. Any ideas?
>
>I've tried just creating a view with an inner join on these two tables, but that's even slower...
>
>TIA
Diana,
Another one minute test. Does it make a difference if you use distinct in subquery.
Cetin
Çetin Basöz

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