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Re: index speed and failed expectations?

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> > 
> > However, if you limit the number of rows enough, you
> might force it
> > to use an index:
> > 
> > select * from stats order by start_time limit 1000;
> > 
> 
> Thanks! Since LIMIT/OFFSET is the typical usage pattern for
> a paginated 
> data set accessed from the Web (which is my case), it
> immediately 
> becomes a non-issue.
> 

We do a lot of queries with order by limit n, and from my experience setting enable_sort to off on the database also makes a massive difference.

http://www.postgresql.org/docs/8.3/static/indexes-ordering.html


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