TL;DR: DuckDB v2.0 replaces its PostgreSQL-derived SQL parser with a PEG-based parser that is easier to evolve and can be extended at runtime. At DuckDB, one of our goals is to make working with a database system as easy as possible. Users interact with the system through the widely understood Structured Query Language (SQL). Previous blog posts have covered DuckDB’s friendly SQL, including GROUP BY ALL and column selection using SELECT * EXCLUDE (...). Before DuckDB can execute a query using th...