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Re: Forcing the use of one index instead other.

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You could remove the index numberfail.

PG can use the index failtype in the case you just need a where clause on numberfail also....

Ries


Hello there!


I have two index  with a same field into them like this:

create index  numberfail on Events (numberfail);
and
create index failtype on  Events (numberfail,eventtype);



then i ran explain analyze and always took the numberfail index but i wish the failtype index;



this is the query:


SELECT * FROM events WHERE numberfail=194 AND eventtype='XXX';

What should i to do to force the use of failtypeindex????

I though maybe if i delete the index numberfail could works, but i don't know if the another program
will fail  if the numberfail index does'nt exists.


well, thats all for the moment and i appreciate your time in reading this mail!!!
See you.
--
SENSA Control Digital.
Ing. Edmundo Robles Lopez.
Analista Programador.





			regards, Ries van Twisk


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Ries van Twisk
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