CREATE TABLE test (id INTEGER PRIMARY KEY, name TEXT, value REAL);the column id becomes an alias for the internal rowid — the B-tree key itself. A query like WHERE id = 5 resolves to a direct B-tree search and scales O(log n). (I already wrote a TLDR piece about how B-trees work here.) The SQLite query planner documentation states: “the time required to look up the desired row is proportional to logN rather than being proportional to N as in a full table scan.” This is not an optimization. It is a fundamental design decision in SQLite’s query optimizer:
adding -i will make the rebase interactive.)
，更多细节参见新收录的资料
这三件事看似孤立，却共同勾勒出全球影视行业在AI浪潮冲击下的真实图景：。新收录的资料对此有专业解读
但週日早上於沙赫蘭拍攝的影像顯示，救援人員正在查看被燒毀的油罐車、熏黑的建築物以及仍在燃燒的火焰。
为什么是 Lumia 1020很多人不理解，一台 2013 年发布的、用着骁龙 S4 处理器、2GB 内存、32G 存储还不能插卡的老机器，到底有什么值得收藏的？ 但如果把时间线拉回当年，你会发现它的意义远不只是「老机器」，Lumia 1020 几乎可以看作 Nokia 被 Microsoft 收购前最后一代旗舰作品，也是整个 Windows Phone 时代里，硬件辨识度最高的一台手机。