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- Configuring and carrying out a FULLTEXT search in MySQL
MATCH col1 , col2 , MATCH takes a comma-separated list that names the columns to be searched. The search string must be a string value that is constant during query evaluation. This rules out, for example, a table column because that can differ for each row.
A natural language search interprets the search string as a phrase in natural human language a phrase in free text. There are no special operators, with the exception of double quote " characters.
The stopword list applies. A boolean search interprets the search string using the rules of a special query language. The string contains the words to search for.
It can also contain operators that specify requirements such that a word must be present or absent in matching rows, or that it should be weighted higher or lower than usual. Certain common words stopwords are omitted from the search index and do not match if present in the search string. A query expansion search is a modification of a natural language search.
MySQL Tutorial 65 - Full Text Search Index
The search string is used to perform a natural language search. Then words from the most relevant rows returned by the search are added to the search string and the search is done again.
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The query returns the rows from the second search. This may be helpful for debugging full-text queries. Function and Operator Reference.
Type Conversion in Expression Evaluation. Comparison Functions and Operators. Numeric Functions and Operators.
Date and Time Functions. String Functions and Operators. String Comparison Functions and Operators. Character Set and Collation of Function Results. Full-Text Search Functions.
Creating FULLTEXT Indexes for Full-Text Search
Natural Language Full-Text Searches. Full-Text Searches with Query Expansion.
Adding a Collation for Full-Text Indexing. Encryption and Compression Functions. Spatial Analysis Functions. Spatial Function Reference. Argument Handling by Spatial Functions.
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Geometry Format Conversion Functions. Geometry Property Functions. General Geometry Property Functions. Point Property Functions.
Polygon and MultiPolygon Property Functions. GeometryCollection Property Functions. Spatial Operator Functions. Spatial Geohash Functions.
Spatial Convenience Functions. Detection of Functional Dependence. Window Function Descriptions.
Window Function Concepts and Syntax. Window Function Frame Specification.
Window Function Restrictions. Performance Schema Functions. Miscellaneous Functions. Types of Numeric Values.
Configuring and carrying out a FULLTEXT search in MySQL
Expression Handling. Precision Math Examples. Errors, Error Codes, and Common Problems. MySQL 8.