SQL数据库性能优化的相关内容

阿里云文档 2024-12-13

使用SQL诊断功能优化实例

Hologres提供慢Query日志，默认采集大于100ms的DML和所有DDL。基于慢Query日志的数据，Hologres提供SQL诊断的能力，通过对不同维度的趋势、明细分析，可以辅助您了解实例的使用情况并做相应的优化，以达到更好的效果。本文为您介绍如何使用SQL诊断。

阿里云文档 2024-05-15

【通知】DAS SQL洞察和审计中PostgreSQL的审计日志输出格式优化

为进一步提升用户体验，DAS即将对SQL洞察和审计中PostgreSQL的审计日志输出格式进行优化升级。

文章 2022-02-16 来自：开发者社区

智能SQL优化工具－－SQL Optimizer for SQL Server（帮助提升数据库应用程序性能，最大程度地自动优化你的SQL语句）

原文:智能SQL优化工具－－SQL Optimizer for SQL Server（帮助提升数据库应用程序性能，最大程度地自动优化你的SQL语句） SQL Optimizer for SQL Server 帮助提升数据库应用程序性能，最大程度地自动优化你的SQL语句 SQL Optimizer for SQL Server 让 SQL Server DBA或者T-SQL开发人员能...

文章 2018-04-10 来自：开发者社区

Sql Server数据库性能优化之索引

最近在做SQL Server数据库性能优化，因此复习下一索引、视图、存储过程等知识点。本篇为索引篇，知识整理来源于互联网。索引加快检索表中数据的方法，它对数据表中一个或者多个列的值进行结构排序，是数据库中一个非常有用的对象。索引的创建 #1使用企业管理器创建启动企业管理器--选择数据库------选在要创建索引的表------在表的下拉菜单中选择索引---在快捷菜单中选择新建索...

文章 2015-05-29 来自：开发者社区

SQL Server数据库性能优化技巧

原文:SQL Server数据库性能优化技巧查询速度慢的原因很多，常见如下几种： 1、没有索引或者没有用到索引； 2、I/O吞吐量小，形成了瓶颈效应； 3、内存不足； 4、网络速度慢； 5、查询出的数据量过大； 6、锁或者死锁； 7、返回了不必要的行和列； 8、查询语句不好，没有优化。可以通过如下方法来优化查询：硬件/网络方面 1、升级硬件。 2、提高网速。 3、扩大服务器的内...

文章 2008-09-04 来自：开发者社区

设计1个应用系统似乎并不难，但是要想使系统达到最优化的性能并不是一件容易的事。在开发工具、数据库设计、应用程序的结构、查询设计、接口选择等方面有多种选择，这取决于特定的应用需求以及开发队伍的技能。本文以SQL Server为例，从后台数据库的角度讨论应用程序性能优化技巧，并且给出了一些有益的建议。　　1　数据库设计　　要在良好的SQL Server方案中实现最优的性能，最关键的是要有1个很好....

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