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PostgreSQL Release 8.4

2009-07-24 13:25:31| 分类： dbms | 标签： |举报 |字号大中小订阅

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看看release notes，这是个跟踪最新进展的好方式
里面会讲述一些实现的改动（新的实现or算法），性能的改进等等，可以供实现的时候参考

Windowing Functions
Common Table Expressions and Recursive Queries
Default and variadic parameters for functions
Parallel Restore
Column Permissions
Per-database locale settings
Improved hash indexes
Improved join performance for EXISTS and NOT EXISTS queries
Easier-to-use Warm Standby
Automatic sizing of the Free Space Map
Visibility Map (greatly reduces vacuum overhead for slowly-changing tables)
Version-aware psql (backslash commands work against older servers)
Support SSL certificates for user authentication
Per-function runtime statistics
Easy editing of functions in psql
New contrib modules: pg_stat_statements, auto_explain, citext, btree_gin

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