为什么其他函数方法不行呢

Question

 create function f2()

    -> returns int smallint unsigned

    -> return (4);

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'smallint unsigned

return (4)' at line 2

Answer 1

原来写多了int