In-depth: DuckDB vs Postgres

Postgres functions as a general-purpose client-server OLTP database while DuckDB operates as a lightweight embedded analytical engine, making them diametrically opposed at almost every architectural layer. The two databases differ across memory structure, client-server versus embedded architecture, and query execution strategies. Despite their differences, DuckDB and Postgres can be complementary: Postgres handles transactional workloads while DuckDB accelerates analytical queries over the same data.