SQLite is the world’s most widely-deployed database engine. It’s in your phone, it’s in your browser, and if you search your computer you’ll find its .db files there too. SQLite was inspired by ...

PostgreSQL subqueries allow one SQL query to run inside another, making it possible to solve filtering, aggregation, comparison, and table based problems without writing separate queries. The lesson ...

pg_re2 is a high-performance PostgreSQL extension developed by ClickHouse. It integrates Google's regular expression engine with the Postgres database. While Postgres has its own built-in regular ...