PostgreSQL: Full-Text Search: Overview
Module: Database-Specific Features
Understand Full-Text Search: Built-in search engine (no Elasticsearch needed), tsvector stores documents, tsquery searches, @@ operator matches
Master tsvector & tsquery: to_tsvector() converts text to searchable format, to_tsquery() creates search queries, supports AND/OR/NOT operators
Learn Text Search Configuration: Language-specific (english, spanish, french), stemming (running → run), stop words (the, a, an removed)
Master Ranking: ts_rank() ranks by relevance, ts_rank_cd() considers document length, ts_headline() highlights matches in results
Understand GIN Indexes: Essential for performance (100x faster), index tsvector columns, supports @@ operator, update overhead
Learn When to Use: Simple search (< 1M documents), PostgreSQL-only stack, avoid Elasticsearch complexity, good for blogs/docs/products
Understand Full-Text Search: Built-in search engine (no Elasticsearch needed), tsvector stores documents, tsquery searches, @@ operator matches
Master tsvector & tsquery: to_tsvector() converts text to searchable format, to_tsquery() creates search queries, supports AND/OR/NOT operators
Learn Text Search Configuration: Language-specific (english, spanish, french), stemming (running → run), stop words (the, a, an removed)
Master Ranking: ts_rank() ranks by relevance, ts_rank_cd() considers document length, ts_headline() highlights matches in results
Understand GIN Indexes: Essential for performance (100x faster), index tsvector columns, supports @@ operator, update overhead
Learn When to Use: Simple search (< 1M documents), PostgreSQL-only stack, avoid Elasticsearch complexity, good for blogs/docs/products