PlanetScale: Query Planning for a Sharded System like Vitess

Speaker:

Sugu Sougoumarane

System:

PlanetScale

Video:

YouTube

Traditional query planning involves parsing of an input SQL into an AST, and then transforming it into primitives which can later be sent through an optimizer. However, in a sharded system, each leaf node is a full relational engine that is capable of doing its own optimizations. So, the traditional approach may not work for such a system. And who... Read More