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PolarDB MySQL版的集群版和多主集群（Limitless）的计算节点规格包含两种规格类型：通用规格和独享规格。本文为您介绍这两种规格类型的区别，帮助您决策如何选择。

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PSL4和PSL5两种存储类型有什么区别,如何使用

PSL4和PSL5是PolarDB为不同业务场景所提供的存储类型，两者在价格、数据可靠性及性能方面均存在部分差异。本文为您介绍这两种存储类型的区别，帮助您决策如何选择。

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PolarDB MySQL版边缘集群支持通过控制台或SQL命令管理高权限、普通及全局只读账号的数据库权限，包括授予、修改和重置多种权限类型。

您可以在控制台或使用SQL命令来管理PolarDB MySQL版边缘集群的账号权限。

阿里云文档 2025-03-14

同步或迁移PostgreSQL数据库中vector类型的数据

在AI领域的大语言模型LLM（Large Language Model）应用中，检索增强生成RAG（Retrieval-augmented Generation）技术通过检索外部的辅助知识库，能够显著提升模型输出的准确性和时效性，解决了LLM知识更新慢、容易产生幻觉（回答不准确）的问题。与传统的关键词检索相比，向量检索具备语义层面的相似性检索能力，支持非结构化数据和多模态数据检索。PostgreS...

问答 2022-08-10 来自：开发者社区

新建离线同步节点时选择数据去向-表时报错，数据库类型是adb pg，怎么办？

文章 2022-02-17 来自：开发者社区

Java 技术篇 - java同时连接多种数据库执行sql语句的兼容性验证，数据库类型包括：oracle、sqlserver、DB2、人大金仓、达梦、PG、瀚高、polardb

Java 操作多类型数据库下的兼容性验证第一章：数据库测试①【 oracle 数据库不支持分号】ORA-00933: SQL 命令未正确结束② 【sqlserver 数据库不支持 commit】COMMIT TRANSACTION 请求没有对应的 BEGIN TRANSACTION③ 【DB2 数据库不支持分号】SQLSTATE=42601, SQLERRMC=;;de....

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