Range Index
← Back to DP-420 Terminology Reference
Category: Optimization
Summary: Default index type for string/numeric properties; supports equality, range, and ORDER BY.
Overview
A range index is the default index type Azure Cosmos DB applies to string and numeric properties, storing values in a sorted (B-tree-like) structure that efficiently supports equality (=), range (>, <,>=, <=), ORDER BY, and JOIN queries on that property. Because the default indexing policy indexes every property with a range index automatically, most queries work efficiently out of the box without any manual index tuning.
//old way of authenticating //new CosmosClient(endpoint, accountKey) //new way of authenticating -> new CosmosClient(endpoint, new DefaultAzureCredential());
More Info & Links
DP-420 Style Practice Questions
Q1. What is the default index type applied to string and numeric properties in Azure Cosmos DB?
- A. Range index
- B. Spatial index
- C. Composite index
- D. Hash index
Q2. Which query types does a range index efficiently support?
- A. Equality, range comparisons, and ORDER BY on the indexed property
- B. Only geospatial proximity searches
- C. Only vector similarity searches
- D. Only queries against the partition key
Answer Key
Answers are listed at the very end so you can attempt the questions first.
- Q1 (Range Index): A. Range index — Range indexes are applied by default to string and numeric properties and support equality, range, and ORDER BY queries.
- Q2 (Range Index): A. Equality, range comparisons, and ORDER BY on the indexed property — A range index supports equality, range (>, <,>=, <=), ORDER BY, and JOIN operations on the indexed property.
DP-420: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB — term detail page
