On Fri, Jan 29, 2010 at 3:24 PM, John Lister <john.lister...@kickstone.com> wrote: > Hi, I was wondering if this was possible. I'm trying to partition a table, > which is straightforward enough thanks to the great documentation, but i > have a question: > > If I partition using something like a product_id for example and have check > constraints such as (id>=1000 and id<2000) then everything is fine and the > planner correctly uses the right subset of the tables. However I would like > to partition by the first letter and using something like this > substr(word,1,1)='a' is ignored by the planner. From reading the docs I > understand that complicated check constraints are ignored, but this doesn't > seem overly complicated. > > Am i doing something wrong or is there another better way to do this
Have you tried: (word >= 'a' and word <'b') ? -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
