createtableuserinfo(useridnumberprimarykey,usernamevarchar(50),passwordvarchar2(50),emailvarchar(50))insertintouserinfovalues(1,'安全',1111,'1244918797@qq.com');insertintouserinfovalues(2,'晨曦',2222,'976800153@qq.com');insertintouserinfovalues(3,'颜曦',3333,&