On 8th of February, Peter Eisentraut committed patch:
Per-column collation support This adds collation support for columns and domains, a COLLATE clause to override it per expression, and B-tree index support. Peter Eisentraut reviewed by Pavel Stehule, Itagaki Takahiro, Robert Haas, Noah Misch Branch ------ master
Continue reading Waiting for 9.1 – Per-column collation support
On 10th of February, Magnus Hagander committed patch:
Track last time for statistics reset on databases and bgwriter Tracks one counter for each database, which is reset whenever the statistics for any individual object inside the database is reset, and one counter for the background writer. Tomas Vondra, reviewed by Greg Smith
On 8th of February, Tom Lane committed patch:
Core support for "extensions", which are packages of SQL objects. This patch adds the server infrastructure to support extensions. There is still one significant loose end, namely how to make it play nice with pg_upgrade, so I am not yet committing the changes that would make all the contrib modules depend on this feature. In passing, fix a disturbingly large amount of breakage in AlterObjectNamespace() and callers. Dimitri Fontaine, reviewed by Anssi Kääriäinen, Itagaki Takahiro, Tom Lane, and numerous others