How to implement BM25 full-text search in PostgreSQL without external dependencies

How to implement BM25 full-text search in PostgreSQL without external dependencies

This task can be performed using Pg Textsearch

BM25-powered full-text search, natively inside PostgreSQL.

Best product for this task

Pg Tex

Pg_textsearch is a PostgreSQL extension that adds BM25 relevance-ranked full-text search with simple SQL syntax. It integrates with native text search configurations, supports partitioned tables, and targets modern Postgres versions for scalable, in-database text ranking.

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What to expect from an ideal product

  1. Works directly inside PostgreSQL without needing separate search servers or external tools that complicate your setup
  2. Uses standard SQL queries instead of forcing you to learn complex search APIs or new query languages
  3. Plugs into PostgreSQL's built-in text search features so you don't have to rebuild your existing search setup from scratch
  4. Handles large databases with partitioned tables automatically, so your search stays fast even as your data grows
  5. Runs on recent PostgreSQL versions without compatibility headaches or outdated dependencies holding you back

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