length
Description
Syntax
‘INT length (VARCHAR str)’
Returns the length of the string and the number of characters returned for multi-byte characters. For example, five two-byte width words return a length of 10.
example
mysql> select length("abc");+---------------+length ('abc') 1244;+---------------+| 3 |+---------------+mysql> select length("中国");+------------------+| length('中国') |+------------------+| 6 |+------------------+