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3 cze 2024 · Use PostgreSQL full text search feature to perform complex searches on text stored in the database. Use tsvector and tsquery data types for full text searches. Use the match operator ( @@ ) to check if documents match a query.
29 mar 2024 · Use PostgreSQL full text search feature to perform complex searches on text stored in the database. Use tsvector and tsquery data types for full text searches. Use the match operator ( @@ ) to check if documents match a query.
29 paź 2012 · Full-text search doesn't really work on large objects stored as lob or oid-references. You cannot full-text index the contents of pg_largeobject. Full-text search is an indexing system for text. It cannot index PDF, Microsoft Word documents, or other random binary files.
The pg_trgm module provides functions and operators for determining the similarity of alphanumeric text based on trigram matching. https://www.postgresql.org/docs/current/static/pgtrgm.html.
postgres=# explain analyze SELECT docid, ts_rank(text_vector, to_tsquery('english', 'title')) AS rank FROM ti2 WHERE text_vector @@ to_tsquery('english', 'title') ORDER BY text_vector>< plainto_tsquery('english','title') LIMIT 3;
7 cze 2023 · PostgreSQL's full-text search capabilities provide a robust and efficient solution for searching large volumes of text data. By leveraging its built-in functions and operators, you can easily implement powerful search functionality in your applications with minimal effort.
26 wrz 2024 · Full Text Search. Chapter 12. Full Text Search. Table of Contents. 12.1. Introduction. 12.1.1. What Is a Document? 12.1.2. Basic Text Matching. 12.1.3. Configurations. 12.2. Tables and Indexes. 12.2.1. Searching a Table. 12.2.2. Creating Indexes. 12.3. Controlling Text Search. 12.3.1. Parsing Documents. 12.3.2. Parsing Queries. 12.3.3.
