mysql5.7在创建账户并授予权限遇到错误ERROR 1064 (42000)

错误的命令如下：

grant SELECT,UPDATE,INSERT,DELETE on . to 'work'@'%' identified by 'xxxx';

更改成两个语句：

create user 'work'@'%' identified by 'xxxx';

下面的语句依然报错：

grant SELECT,UPDATE,INSERT,DELETE on . to 'work'@'%';

grant SELECT,UPDATE,INSERT,DELETE on . to work@'%';

正确的为：

grant SELECT,UPDATE,INSERT,DELETE on *.* to 'work'@'%';