Re: Natural sort order

If you use btrsort(column) from the example, you can just create a
functional index on this expression.

CREATE INDEX mytable_column_btrsort_idx ON mytable( btrsort(column) );

this can help.





2011/12/17 Richard Klingler <richard@klingler.net>:
> Morning...
>
> What is the fastest way to achieve natural ordering from queries?
>
> I found a function at:
> http://2kan.tumblr.com/post/361326656/postgres-natural-ordering
>
> But it increases the query time from around 0.4msecs to 74msecs...
> Might be not much if occasional queries are made..but I use it for
> building
> up a hierarchical tree menu in a web application where every msecs
> counts (o;
>
>
> cheers
> richard
>
>
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