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Day: February 1, 2021

南大通用GBase 8a资源通过管理元数据查看当前配置

Posted on 2021年2月1日2021年2月5日 by laozizhu
GBase 8a 数据库集群资源管控架构图

本文介绍GBase 8a 数据库集群在开启资源管理后,如果通过元数据查看当前的资源管理配置情况。

南大通用GBase 8a执行计划从简单入门到复杂用例讲解

Posted on 2021年2月1日2021年2月1日 by laozizhu
GBase 8a数据库集群执行计划 explain TOPN带排序和有限结果的的聚合

本文针对GBase 8a数据库集群的执行计划功能(Explain),采用从简单到复杂的常用SQL,逐步解读执行计划的使用方法,包括单表聚合group, 排序order,以及多表join等情况,并考虑到随机分布表,Hash分布表和复制表等情况。

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