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* Update copyright for 2009.Bruce Momjian2009-01-01
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* Add some basic support for window frame clauses to the window-functionsTom Lane2008-12-31
| | | | | | | | patch. This includes the ability to force the frame to cover the whole partition, and the ability to make the frame end exactly on the current row rather than its last ORDER BY peer. Supporting any more of the full SQL frame-clause syntax will require nontrivial hacking on the window aggregate code, so it'll have to wait for 8.5 or beyond.
* Support window functions a la SQL:2008.Tom Lane2008-12-28
Hitoshi Harada, with some kibitzing from Heikki and Tom.