Re: Window functions review

Just to let you know, I'm hacking this patch again, the executor part in 
particular. I've got a stripped out the unfinished window frame stuff, 
refactored the Window object API so that the window functions don't get 
to, and don't need to, access tuple slots directly. And a bunch of other 
simplifications as well. I'll post as soon as it's in a more readable state.

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com