Columnar Databases Explained: ClickHouse, BigQuery, and Redshift

How column-oriented storage, compression, and vectorized execution make analytical queries 10 to 100 times faster - Cloudflare runs a query that scans over a quadrillion events and returns in under two seconds. The same shape of query on a normal PostgreSQL table would still be running by the time you gave up and went for coffee. The difference is not more hardware or a clever index....