Structure Indexes

Audit Single vs Multi-Column Indexes in PostgreSQL Not all indexes are created equal. A single-column index covers one column and is simple to reason about. A multi-column (composite) index covers two or more columns and can serve a wider range of queries — but only when the leading columns match the query filter. As a …

Identifying Unused Indexes in PostgreSQL: Optimizing Storage and Performance In PostgreSQL, indexes act as shortcuts, accelerating data retrieval within tables. However, unused indexes can become a burden, consuming storage space and potentially impacting performance. This article explores a PostgreSQL code snippet …

PostgreSQL Index Cardinality: A Guide to Understanding Index Efficiency This blog post delves into the world of PostgreSQL index cardinality, a crucial metric for optimizing database performance. We'll dissect the provided SQL code, explain its purpose, and equip you with valuable insights to make informed decisions …

Keeping PostgreSQL Queries Speeding Along: Monitoring Index Cache Hit Rates For a smooth-running PostgreSQL database, ensuring efficient access to frequently used data is crucial. Indexes act as shortcuts, speeding up queries. But how well are those indexes utilized? This post explores a SQL query that helps you …

Find the Largest PostgreSQL Indexes by Size Which indexes are taking up the most disk in this database? pg_index joined to pg_class answers that in one query: every index with its table, schema, tablespace, size, and the command that would recreate it, sorted with the biggest first. It is the inventory step before any …

Monitoring PostgreSQL Index Usage: Keeping Your Queries Speedy In the fast-paced world of web applications, ensuring efficient database queries is paramount. PostgreSQL's powerful indexing capabilities play a crucial role in achieving optimal performance. This post delves into a SQL query that helps you monitor index …