MySQL: Order by field size/length

Here is a table structure (e.g. test):

Field Name	Data Type
id	BIGINT (20)
title	varchar(25)
Description	Text

A query like:

SELECT * FROM TEST ORDER BY desc开发者_StackOverflow社区ription DESC;

But I would like to order by the field size/length of the field description.

The field type will be TEXT or BLOB.

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SELECT * FROM TEST ORDER BY LENGTH(description) DESC;

The LENGTH function gives the length of string in bytes. If you want to count (multi-byte) characters, use the CHAR_LENGTH function instead:

SELECT * FROM TEST ORDER BY CHAR_LENGTH(description) DESC;

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For those using MS SQL

SELECT * FROM TEST ORDER BY LEN(field)

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SELECT * FROM TEST ORDER BY CHAR_LENGTH(description);