trim description Syntax example keywords trim description Syntax VARCHAR ltrim(VARCHAR str) 将参数 str 中右侧和左侧开始部分连续出现的空格去掉 example 1. mysql> SELECT trim(' ab d ') str; 2. +------+ 3. | str | 4. +------+ 5. | ab d | 6. +------+ keywords 1. TRIM