LENGTH

База данных: MySQL

68747470733a2f2f7374796c65732e7265646469746d656469612e636f6d2f74355f32716d366b2f7374796c65

Topic

Syntax:
LENGTH(str)

Returns the length of the string str, measured in bytes. A multibyte
character counts as multiple bytes. This means that for a string
containing five 2-byte characters, LENGTH() returns 10, whereas
CHAR_LENGTH() returns 5.

URL: https://dev.mysql.com/doc/refman/8.0/en/string-functions.html

Example

mysql> SELECT LENGTH('text');
-> 4

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