* Before exiting walreceiver, ensure all the received WAL is fsync'd to disk
* Avoid excess fsync activity in walreceiver
* Make "ALTER TABLE" revalidate uniqueness and exclusion constraints when needed
* Fix EvalPlanQual for "UPDATE" of an inheritance tree in which the tables are
not all alike
* Avoid failures when "EXPLAIN" tries to display a simple-form CASE expression
* Fix assignment to an array slice that is before the existing range of
subscripts
* Avoid unexpected conversion overflow in planner for very distant date values
* Fix PL/Python crash when an array contains null entries
* Remove ecpg's fixed length limit for constants defining an array dimension
* Fix erroneous parsing of tsquery values containing ... &
!(subexpression) | ...
* Fix buffer overrun in "contrib/intarray"'s input function for the query_int
type
* Fix bug in "contrib/seg"'s GiST picksplit algorithm
9.0 includes more major features than any release before it, including:
* Hot standby
* Streaming replication
* In-place upgrades
* 64-bit Windows builds
* Easy mass permissions management
* Anonymous blocks and named parameter calls for stored procedures
* New windowing functions and ordered aggregates
... and many more. For details on the over 200 additions and improvements in
this version, developed by over a hundred contributors, please see the release
notes.
