Log Files insert Insert xlog begin insert2 insert3 1 2 3 commit 1、2、3 Xlog flush 阻塞 数据 checkpoint 2016Postgres中国用户大会 Postgres Conference China 2016 中国用户大会  Functions of WAL

rac1 rac2 rac3 rac n Oracle RAC 11G ODPS ETL建模 交互式分析 AnalyticDB for MySQL 实时数仓 ⚫ All In One数仓去O ⚫ 交互式分析 ⚫ 中小规模实时数仓 小烟枪在阿里的场景裂变 Greenplum发展史@Alibaba 产品云化-服务中小企业  IaaS、PaaS、SaaS皆云化-大势所趋  阿里云能够提供一站式的分析解决方案 - 3 非结构化数据向量检索， “以图搜图” （规划中） 场景应用： 1、Web App把图片或者视频等非结构化数据 通过特征提取服务，提取特征向量，并写入 AnalyticDB for PG的向量表。 2、Web App检索的时，把非结构化数据通过 特征提取服务接口提取出向量，同时调用 AnalyticDB for PG的查询分析接口做查询。 特点： • 易用，结构化和非结构化数据关联查询。 for PostgreSQL AnalyticDB for PostgreSQL Client 特征提取服 务 5.检索分析 1.注册特征提取服务 3.写入url 4.生成特征 2.写入非 结构化数 OSS 音频 图片 文本 向量 ①GPU的计算性能加速 ②支持Greenplum 6.0版本 其他演进规划： 更快性能 敬请期待！

是否能保证备库使用WAL段之前不会 过早的移除它们 主库不会过早的清除掉掉从库正在使 用的记录 是否可以控制日志大小 复制槽技术 可以保证 可以保证 可能会造成膨胀 非复制槽 不能保证 不能保证 不会造成膨胀 复制槽技术 2016Postgres中国用户大会 Postgres Conference China 2016 中国用户大会 自定义输出插件

Where to Report Bugs ....................................................................... xxxvii I. Tutorial ......................................................................................... ............................................................................................. 1547 I. SQL Commands ..................................................................................... ...................................... 2914 I. The Source Code Repository ........................................................................... 2915 I.1. Getting the Source via Git .............

to Report Bugs .................................................................................. xl I. Tutorial ......................................................................................... ............................................................................................. 1629 I. SQL Commands ..................................................................................... ............... 3079 I. The Source Code Repository ................................................................................ 3081 xxi PostgreSQL 17beta1 Documentation I.1. Getting the Source

Bugs .............................................................................................lxx I. Tutorial.......................................................................................... .............................................................................................1166 I. SQL Commands...................................................................................... .............................2881 I. The Source Code Repository.............................................................................................2882 I.1. Getting The Source via Git .....

.............................................................................................lxxv I. Tutorial.......................................................................................... .............................................................................................1236 I. SQL Commands...................................................................................... ..........................3055 I. The Source Code Repository....................................................................................................3056 I.1. Getting The Source via Git .

Where to Report Bugs ....................................................................... xxxvii I. Tutorial ......................................................................................... ............................................................................................. 1509 I. SQL Commands ..................................................................................... ...................................... 2872 I. The Source Code Repository ........................................................................... 2873 I.1. Getting the Source via Git .............

to Report Bugs .................................................................................. xl I. Tutorial ......................................................................................... ............................................................................................. 1590 I. SQL Commands ..................................................................................... ................................... 3025 I. The Source Code Repository ................................................................................ 3027 I.1. Getting the Source via Git ...........

.............................................................................................xliv I. Tutorial.......................................................................................... ..............................................................................................717 I. SQL Commands...................................................................................... a different class of users, or at users in different stages of their PostgreSQL experience: • Part I is an informal introduction for new users. • Part II documents the SQL query language environment,