菜鸟问mysql语法（grant)

SQL code

grant select,delete,update on localhost.library to 'exp04'@'localhost' identified by '12345';

为什么执行这条语句会报错呢：
Table 'localhost.library' doesn't exist

------解决方案--------------------
grant select,delete,update on library.* to 'exp04'@'localhost' identified by '12345';