M1 • Optimizer & Cardinality
Level 9 - Distinguished - Optimizer & Cardinality
Reason about planner internals: cardinality estimation failure modes, join-order risk, plan stability, and cost-model trade-offs.
Module Coverage
10 questions focused on interview-style decision making, trade-offs, and scalable SQL design.
cardinality estimationjoin orderingplan cache stabilitycost model trade-offs