How Out-of-Bounds Are Your Cardinality Estimates?

Ready

Queries

xBound xBound: Parameters

⚖️ Stats overhead: -- MB

Soundness and Q-error

🎯 Motivation: Underestimates in Production
CPU in production over time
💡 Our solution: lower bounds!
xBound-ed systems overview
For the first time, we have both lower and upper cardinality bounds.

Let's see how out-of-bounds are our systems!