Is your OLTP database running analytics and working just a leetle too hard? Maybe you need an analytic database! In this talk we introduce ClickHouse, a popular Apache 2.0 analytic database, in terms that any MySQL or PostgreSQL developer can grasp quickly. The talk starts with a demo of outstanding speed of ClickHouse--subsecond query on trillion row datasets. We'll then show you how ClickHouse works using familiar concepts like relational tables, aggregation, indexes, and query execution. As you'll see, ClickHouse is both like and unlike the OLTP databases you use every day. The talk ends with a discussion of how ClickHouse can work together with MySQL and PostgreSQL to add more firepower to your existing transaction processing systems.