Top 50 indexing Interview Questions
The most frequently asked indexing questions across all roles and companies, ranked by real interview frequency. Updated daily.
Optimize a large Apple analytics query using partition pruning, selective indexes, joins, aggregation, and window calculations.
AppleTests your ability to diagnose and improve SQL query performance using indexing, query plans, and execution strategies.
Twilio
A+E Group
ArcesiumTests your ability to improve query performance using indexing, query plans, and efficient SQL patterns.
First Command Financial Services
Blue Cross and Blue Shield of Kansas
Neuberger BermanTests understanding of database performance and indexing tradeoffs.
Itlize GlobalMMindfire Solutions
GarenaRank Balyasny research models by average return within each asset class using DENSE_RANK and aggregation.
Balyasny Asset ManagementUse RANK() and grouped revenue to find ServiceTitan's top three service categories in each region.
ServiceTitanReturn the most similar RBC NOMI document embeddings using cosine similarity and deterministic top-k ranking.
RBCUse a hash map to return every index pair whose values sum to a target in Valence workspace data.
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Optimize storage and retrieval across vector, graph, and search databases through indexing, partitioning, modeling, and pipeline design.
AdobeApproach for partitioning and indexing time-series model training metrics so writes stay efficient and queries remain fast over time.
Anthropic