mysql % what does it mean

The % operator in MySQL is a wildcard character that matches zero or more characters and is used for fuzzy queries in the LIKE operator, such as SELECT * FROM customers WHERE name LIKE '%Smith%';, Matches any name containing "Smith". It is not case-sensitive, and the matching pattern can be further generalized using multiple % s, by escaping the character \ to match actual % characters.

The meaning of % in MySQL

In MySQL, the % operator is a wildcard character that matches input characters Zero or more characters in the string. Simply put, it can match any length of text.

Usage

% operator is usually used in the LIKE operator to implement fuzzy queries. For example:

<code>SELECT * FROM customers WHERE name LIKE '%Smith%';</code>

This query will return all records that contain "Smith" in the name field, regardless of where the text appears in the name.

Examples

Here are some practical examples of using the % operator:

• %John% Match contains Any name for "John", for example: "John Doe" or "Susan John".
• %_son Matches any name ending in "_son", for example: "Johnson" or "Peterson".
• % matches any non-empty string since it can match any number of characters.

Note

• % operator is not case sensitive.
• To match an actual % character, use the escape character \, for example \%.
• You can use multiple % operators to further generalize the matching pattern.

The above is the detailed content of mysql % what does it mean. For more information, please follow other related articles on the PHP Chinese website!