上周末，浏览Sybase官方网站，看到Sybase IQ 15.3的技术手册已经发布，这就意味着我期待已久的Shared MPP架构下的新的IQ版本发布了。
粗粗看了看官方的“New Features”文档，觉得有两个特性比较吸引我：
1.分布式查询处理(Distributed Query Processing)
Distributed Query Processing (DQP) improves performance in IQ multiplex configurations by distributing query processing work across multiple nodes in the logical server.
DQP occurs automatically for qualifying queries. Queries that do not qualify for
parallelization are not considered for DQP; therefore, any query that does not run in parallel on pre-15.3 versions of Sybase IQ will not be distributed in 15.3.
2.查询内部并行增强(Enhanced Parallelism within Queries)
Additional query parallelization and distribution support improves query performance in Sybase IQ 15.3. Sybase IQ 15.3 increases the types of operators that are automatically parallelized by the Sybase IQ query engine. This feature requires no change in query syntax. No specific tuning is required.
日后我会把对这个版本的相关体会和文档陆续写出来跟大家分享！