PostgreSQL 9.5 Alpha 1 发布，该版本值得关注的新特性包括： Block-Range Indexes (BRIN) which enable compact indexing of very large tables Large speed improvements in in-memory sorting and hashing Automated management of transaction log size INSERT ON CONFLICT UPDATE, otherwise known as "UPSERT" Grouping Sets, CUBE and ROLLUP analytic operations Row-Level Security (RLS) support More JSONB data manipulation functions and operators Added the pg_rewind tool and other high availability improvements to replication Multiple enhancements to Foreign Data Wrappers, including IMPORT FOREIGN SCHEMA Large increases in multi-core and large memory scalability 详细介绍请看发行说明。 相关链接： Downloads Page Alpha Testing Information 9.5 Alpha Release Notes What's New in 9.5 PostgreSQL 9.5 Alpha 1 发布，排序性能提升下载地址
