Download PostgreSQL 9.5.0

PostgreSQL 9.5.0

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# Major enhancements :
- Allow INSERTs that would generate constraint conflicts to be turned into UPDATEs or ignored
- Add GROUP BY analysis features GROUPING SETS, CUBE and ROLLUP.
- Add row-level security control.
- Create mechanisms for tracking the progress of replication, including methods for identifying the origin of individual changes during logical replication.
- Add Block Range Indexes (BRIN).
- Substantial performance improvements for sorting.
- Substantial performance improvements for multi-CPU machines.