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Bad performance
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29/01/2002 13:21:29
 
 
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Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Bad performance
Divers
Thread ID:
00612305
Message ID:
00612305
Vues:
63
Hi Folks -
We have the following statement in our code which peforms OK on a table size of less than 10,000 records, anything greater we are running into performance issues. Can anyone advise how we could correct it:

...
select prod_tran
set filter to
set order to
set exact on
SELECT * FROM PRO_SCHT INTO CURSOR PROSCHT WHERE ALLTRIM(PRO_SCHT.SPFLAG)="*"
SELECT 0000000000.000 AS CNTRANGE ,* FROM proscht a INTO DBF &pscht where EXISTS(SELECT * FROM PROD_TRAN b WHERE (a.p_number=b.p_number AND ALLTRIM(b.TRANNUMBER)=ALLTRIM(m.trannumber)))

PSCHTA=ALIAS()
....

We need to create the &pscht as a dbf as we are continuously updating it.

Thanks,

Larry
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