Discover how PostgreSQL and SQL Server—including Azure SQL—differ in their B-Tree index implementations, storage behavior, and performance impact. Includes benchmarks, deduplication analysis, and a side-by-side index comparison guide for engineers optimizing or migrating databases.

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Discover how PostgreSQL and SQL Server (including Azure SQL) differ in their B-Tree index implementations, storage behavior, and performance impact. The post includes benchmarks on deduplication, detailed test setups, and a comprehensive indexing comparison table. It highlights key differences in index size and performance, especially with PostgreSQL's index deduplication, which significantly reduces index size and improves cache performance.

Postgres vs. SQL Server: B-Tree Index Differences & the Benefit of Deduplication

How B-Tree indexing works in PostgreSQL vs. SQL Server

Comparison Table: PostgreSQL vs. SQL Server Indexing

Choosing the right index for your workload