描述
FLOOR函数将数字向下舍入为零,直到最接近的有效倍数。
语法
FLOOR (number, significance)争论
Argument描述Required/OptionalNumberThe numeric value you want to round.RequiredSignificanceThe multiple to which you want to round.Required
Notes 如果数字的符…
① 设置MySQL中root用户的权限:
[rootnginx-dev etc]# mysql -uroot -pRoot123
mysql> use mysql;
mysql> GRANT ALL PRIVILEGES ON *.* TO root% IDENTIFIED BY Root123 WITH GRANT OPTION;
mysql> select host,user,authentication_string from user;
-…