Simon Riggs wrote:
> On 15 June 2013 12:25, Hannu Krosing <ha...@2ndquadrant.com> wrote:
> 
> > additionally it *could* have the property Simon proposed earlier
> > of *uncompressed* pages having some predetermined size, so we
> > could retain optimisations of substring() even on compressed TOAST
> > values.
> 
> That wasn't about having fixed size pages, it was about having a
> function to determine the split points. Reason being we want to use
> some intelligence to split up JSON and XML documents.

Maybe indexed compressed text would be useful:
http://pizzachili.dcc.uchile.cl/

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services


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