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Speed query with rushmore index
Message
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Visual FoxPro:
VFP 5
Miscellaneous
Thread ID:
01202405
Message ID:
01202416
Views:
12
>
>1) With this query you only will get records with dat_krs from koers_hist_tot = dat_e_bkp, so there is no need to use left join, it is essentially inner join anyway.
>
>2) You may first get koers_hist_tot.dat_krs, koers_hist_tot.fond_cd from Koers_Hist_tot and then use a second select to get records from the big table, e.g. in VFP9 you may do
>
>select fondsen.*, InnerSel.dat_krs from Fondsen inner join (select koers_hist_tot.dat_krs, koers_hist_tot.fond_cd where ...) InnerSel on
>FondSen... = InnerSel..
>
>In VFP5 you can use two selects.

I'll try both out and see if this helps me. Thanks.
Zakaria al Azhar
My blog on Actuaris.net
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