Grant Fritchey:与Grant一起学习PostgreSQL:介绍VACUUM
原文英文,约2100词,阅读约需8分钟。发表于: 。While there are many features within PostgreSQL that are really similar to those within SQL Server, there are some that are unique. One of these unique features is called VACUUM. In my head, I...
PostgreSQL的VACUUM功能用于从表中删除逻辑上删除的数据并保持最新的统计信息。VACUUM可以手动或通过自动清理守护程序自动运行。VACUUM进程还可以与ANALYZE进程结合使用以更新统计信息。VACUUM和ANALYZE都可以在服务器或表级别进行自定义和控制。注意这些过程对于确保数据库健康和优化查询性能非常重要。