The correlation statistic tells the planner how closely the physical row order matches the column's sort order. A value near 1.0 means sequential access patterns - making index scan cheaper because the next row is likely on the same or adjacent page. For time-series data like created_at where rows are inserted chronologically, correlation is typically very high.
跨越山海并非遥不可及：山东一城市以航天科技连接星空与海洋
。todesk对此有专业解读
wastrel：WebAssembly的奢华实现
Sync shell PATH into Emacs. The classic macOS problem: GUI Emacs
破解之道何在？海信的全球化路径提供另一种方案。2004年海信在匈牙利建厂，首度实现欧洲本土化生产。当时的