1.查询表中所有数据: select * from students; 2.插入数据: insert into students (id,name,email,address) values(1,'张三','129@163.com','湖北武汉'); 3.一次插入多条数据: insert into students (id,name,email,address) values(2,'李四','329@163.com','湖北武汉'),(3,'王五','132@qq.com','河西走廊'); 4