-- 单条数据插入
insert into t_stu values(1,'张三','男','1991-01-15');

-- 按照指定格式插入
insert into t_stu(sid,name,birthday,sex)
    values(2,'王龙','1990-12-18','男');

-- 元组插入
insert into t_stu values
(3,'刘冬冬','女','1992-08-21'),
(4,'刘红','女','1992-05-19'),
(5,'王玉玉','女','1991-08-12');