Articles by tag: Parquet

DuckDB as storage: replacing ETL Postgres

Learn how DuckDB replaces ETL + Postgres with one file for OLAP. Code examples, SLA, migration. Simplify analytics without infrastructure — read the guide for developers.

Parquet in Python: reading, writing and optimization

Practical guide for data engineers: how to read Parquet with filtering, write with explicit schema, use dictionary encoding and partitioning. Works in production.