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阿里云文档 2025-04-22

什么是慢SQL,如何使用SQL分析功能

PolarDB PostgreSQL版提供慢SQL分析功能，能够查看慢日志趋势和统计信息，并且提供SQL建议和诊断分析。

阿里云文档 2025-04-22

什么是慢SQL,如何使用SQL分析功能

PolarDB PostgreSQL版（兼容Oracle）提供慢SQL分析功能，能够查看慢日志趋势和统计信息，并且提供SQL建议和诊断分析。

阿里云文档 2025-02-17

如何使用SQL模式匹配

云原生数据仓库 AnalyticDB PostgreSQL 版兼容PostgreSQL模式匹配。本文简单列举云原生数据仓库 AnalyticDB PostgreSQL 版兼容的模式匹配及用法示例。

阿里云文档 2024-06-27

DAS企业版恢复部分单元Polar PG实例的付费计量

由于部分单元PolarDB PostgreSQL版实例此前开通数据库自治服务企业版（DAS企业版），计费组件出现未部署情况，导致长期没有计费产生，DAS企业版将于2024年07月05日 08:00恢复此部分开通DAS企业版的付费计量。

文章 2018-06-21 来自：开发者社区

PostgreSQL Oracle PL/SQL 兼容性之 - AGGREGATE USING Clause 聚合函数

标签 PostgreSQL , Oracle , PL/SQL , 聚合函数 , 自定义聚合函数背景 Oracle的自定义聚合函数的定义方法，在创建函数是，使用AGGREGATE USING Clause关键词。 AGGREGATE USING Clause Specify AGGREGATE USING to identify this function as an aggregate ...

文章 2018-05-06 来自：开发者社区

PostgreSQL Oracle 兼容性之 - PL/SQL DETERMINISTIC 与PG函数稳定性(immutable, stable, volatile)

标签 PostgreSQL , Oracle , 函数稳定性 , stable , immutable , volatile , DETERMINISTIC 背景 Oracle创建pl/sql函数时，有一个参数DETERMINISTIC，含义时只要输入的参数一样，返回的结果一定一样。 DETERMINISTIC Clause Specify DETERMINISTIC to indicate...

文章 2016-07-14 来自：开发者社区

PostgreSQL Oracle 兼容性之 - PL/SQL record, table类型定义

背景 Oracle PL/SQL是非常强大的一门SQL编程语言，许多Oracle用户也使用它来处理一些要求延迟低且数据一致性或可靠性要求很高的业务逻辑。 PostgreSQL也有一门非常高级的内置SQL编程语言，plpgsql。与Oracle PL/SQL语法极其类似，但是还是有一些不一样的地方。 (PS：除了plpgsql，PostgreSQL还支持C，java，python，perl等...

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