AnalyticDB PostgreSQL发布备份恢复、并行查询等功能，优化并修复部分功能

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        pc

0.0.201

新功能/规格

云原生数据仓库AnalyticDB PostgreSQL版 - AnalyticDB PostgreSQL发布备份恢复、并行查询等功能，优化并修复部分功能

Jul 13 2021

云原生数据仓库AnalyticDB PostgreSQL版

默认打开Laser引擎，单表查询默认打开并行查询，支持排序加速计算，Multi-Master架构下支持备份恢复等功能，优化部分功能

适用客户

Analytic Database for PostgreSQL使用者

新增功能/规格

新增：AnalyticDB PostgreSQL版默认打开Laser引擎；AnalyticDB PostgreSQL版单表查询默认打开并行查询；排序加速计算，当您执行SORT 后，系统会对表数据进行排序，当数据完成排序后，AnalyticDB PostgreSQL即可利用数据的物理顺序，将SORT算子下推到存储层进行计算加速。该特性可以基于SORT KEY加速SORT、AGG、JOIN算子；Multi-Master架构的AnalyticDB PostgreSQL版支持备份恢复功能；新增GUC参数用于查询AnalyticDB PostgreSQL版内核版本，语句如下：show adbpg_version；优化：实时物化视图性能增强。聚合操作MAX和MIN支持了DELETE和UPDATE；支持对基表的变更语句使用CTE；多Master实例，每个Master节点在执行分布式事务时，不需要向GTM请求分布式事务ID，可以直接本地生成。这样可以消除大并发情况下GTM的单点瓶颈，提升分布式事务能力，特别是高并发导入场景的性能。修复多Master实例在Secondary Master上的同一个Session内，发起超过两个分布式事务后，检测不出死锁的问题。

阿里云第七代ECS正式发售

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