left

description

Syntax

VARCHAR left(VARCHAR str)

它返回具有指定长度的字符串的左边部分, 长度的单位为utf8字符

example

1. mysql> select left("Hello doris",5);
2. +------------------------+
3. | left('Hello doris', 5) |
4. +------------------------+
5. | Hello                  |
6. +------------------------+

keyword

LEFT