Does MySQL support full-text search?

Does MySQL support full-text search?

MySQL has support for full-text indexing and searching: A full-text index in MySQL is an index of type FULLTEXT . Full-text indexes can be used only with InnoDB or MyISAM tables, and can be created only for CHAR , VARCHAR , or TEXT columns.

How to full-text search MySQL?

Full-text Searches Using the Boolean Mode

1. “+” means AND;
2. “-” means NOT;
3. The “(“ and “)” operators allows to create subexpressions;
4. “<” and “>” operators change the rank of the search value lower or higher;
5. “~” lowers the value’s contribution to the search results;
6. Double quotes (“”) only match literal values;

How to create full text indexes using MySQL?

There are three types of full-text searches : Note: Some words are ignored in full-text searches. Check list here . First of all we need to create an index of type FULLTEXT in order to perform full-text search query, you must index data of the given columns. MySQL will recreate the full-text index whenever data changes within specified columns.

When to use full text search in MySQL?

This is generally useful when a search phrase is too short, which often means that the user is relying on implied knowledge that the full-text search engine lacks. For example, a user searching for “database” may really mean that “MySQL”, “Oracle”, “DB2” , and “RDBMS” all are phrases that should match “databases” and should be returned, too.

When to use query expansion in full text search?

Full-text search supports query expansion (and in particular, its variant “blind query expansion” ). This is generally useful when a search phrase is too short, which often means that the user is relying on implied knowledge that the full-text search engine lacks.

Which is full text parser does MySQL use?

MySQL provides a built-in full-text ngram parser that supports Chinese, Japanese, and Korean (CJK), and an installable MeCab full-text parser plugin for Japanese. Parsing differences are outlined in Section 12.10.8, “ngram Full-Text Parser”, and Section 12.10.9, “MeCab Full-Text Parser Plugin” .