What is mysql full text search

Abstract: MySQL full-text search is a technology for searching for words or phrases in text. How it works: Text is split into tokens and stored in a full-text index. Match the search term or phrase marked in the text column. Provides fast search, relevance sorting, fuzzy search and partial matching functions.

MySQL Full Text Search

Full text search is a technology used to search for words or phrases in text content . The full-text search feature in MySQL allows you to perform fast and efficient searches on text columns in a table.

How it works

MySQL full-text search works by splitting each word in a text column into tokens. These tags are then stored in a specialized index, a full-text index. When you perform a full-text search query, MySQL matches search terms or phrases marked in text columns.

Benefits

• Fast Search: Full-text indexing allows you to quickly search large amounts of text data, improving application performance.
• Relevance sorting: MySQL can provide the most relevant results by relevancy sorting results based on the frequency and position of matching words or phrases.
• Fuzzy search: Full-text search supports fuzzy search, and matches can be found even if there are spelling errors or similar words.
• Partial Match: You can search for part of a word or phrase, which is useful for finding documents that contain similar content.

Using

To use full-text search in MySQL, you need to:

• Create a table that contains a text column.
• Create a full-text index on the text column.
• Use the MATCH() and AGAINST() functions to perform full-text search queries.

Example

<code class="sql">-- 创建表
CREATE TABLE articles (
  id INT NOT NULL AUTO_INCREMENT,
  title VARCHAR(255) NOT NULL,
  content TEXT NOT NULL,
  PRIMARY KEY (id)
);

-- 创建全文索引
ALTER TABLE articles ADD FULLTEXT INDEX (title, content);

-- 执行全文检索查询
SELECT *
FROM articles
WHERE MATCH(title, content) AGAINST('search term' IN BOOLEAN MODE);</code>

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