SAN FRANCISCO, CA, ClickHouse, creators of the online analytical processing (OLAP) database management system, raised $250 million in Series B funding at a $2 billion valuation. The investment was led by Coatue and Altimeter, with participation from Index Ventures, Benchmark, Lightspeed, Redpoint, Almaz, Yandex N.V., FirstMark and Lead Edge. The superior speed of ClickHouses technology, combined with its rapid adoption by industry leaders, signals the rise of a once-in-a-decade company. ClickHouse is an open-source, column-oriented OLAP database management system that allows users to generate analytical reports using SQL queries in real-time. Its technology works 100-1000x faster than traditional database management systems, and processes hundreds of millions to over a billion rows and tens of gigabytes of data per server per second.