Home > Database > Mysql Tutorial > body text

How do you sort data by string length in MySQL?

DDD
Release: 2024-11-02 13:32:30
Original
154 people have browsed it

How do you sort data by string length in MySQL?

Selecting Data by String Length in MySQL

Initial Query Attempt:

Consider the following query, which attempts to sort data by string length:

<code class="sql">SELECT * FROM table ORDER BY string_length(column);</code>
Copy after login

However, this query produces an error. Despite the existence of a string_length function in MySQL, it cannot be used to sort data.

Solution: Using CHAR_LENGTH()

To sort data by string length, you need to use the CHAR_LENGTH() function. Unlike string_length, CHAR_LENGTH() returns the number of characters in a string, not the number of bytes.

Updated Query:

<code class="sql">SELECT * FROM table ORDER BY CHAR_LENGTH(column);</code>
Copy after login

Difference between LENGTH() and CHAR_LENGTH()

For multi-byte character sets (e.g., UTF-8), LENGTH() will return the number of bytes in a string, while CHAR_LENGTH() will return the number of characters. Therefore, for multi-byte character sets, you should use CHAR_LENGTH() for accurate string length calculations.

The above is the detailed content of How do you sort data by string length in MySQL?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!