LTRIM(s) 用于删除字符串 s 左侧的空格
mysql> SELECT LTRIM(‘ book ‘); +-----------------+ | LTRIM(‘ book ‘) | +-----------------+ | book | +-----------------+
时间: 2025-01-05 13:40:01
LTRIM(s) 用于删除字符串 s 左侧的空格
mysql> SELECT LTRIM(‘ book ‘); +-----------------+ | LTRIM(‘ book ‘) | +-----------------+ | book | +-----------------+