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28 Μαρ 2019 · A text search dictionary takes the form of two functions in C, along with a few SQL declarative statements to create it and assign it to a text configuration. In PostgreSQL source code, there are several examples of dictionaries than can be used as models:
17 Οκτ 2024 · Parsing PDFs with SQL. PDFs are usually parsed via a tool like pdftotext, first and piped into the database. I find it more convenient, though, to query the filesystem with SQL. That’s why I built pgPDF (GitHub); a Postgres extension that allows you to. SELECT pdf_read_file('/path/file.pdf') → text.
This document is a gentle introduction to the full-text search in ORDBMS PostgreSQL (version 8.3+). It covers basic features and contains reference of SQL commands, related to the FTS.
29 Μαρ 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.
26 Σεπ 2024 · Dictionaries are used to eliminate words that should not be considered in a search (stop words), and to normalize words so that different derived forms of the same word will match. A successfully normalized word is called a lexeme.
PostgreSQL, one of the most advanced open-source databases, provides robust support for full-text search through its tsvector and tsquery data types. These tools enable efficient text search capabilities by indexing and querying text data in a way that is both flexible and performant.
18 Ιαν 2017 · I am trying to run full text search operations, such as to_tsvector, to_tsquery, etc and have a need for dictionaries in about 80+ languages. Postgres seems to only come with 16 language configurations, with an additional two I am testing for Chinese (jiebacfg and testzhcg aka ZHParse).
