附加数据库（Attach DB）https://blog.csdn.net/zhanglianyu00/article/details/78436764

attach [database] filename as database_name;
detach [database] database_name;

Squeezing Performance from SQLite: Insertions #

https://medium.com/@JasonWyatt/squeezing-performance-from-sqlite-insertions-971aff98eef2

CREATE INDEX tag_titles ON tags (title);
EXPLAIN QUERY PLAN SELECT * FROM tags WHERE title = "Kotlin";