insert into user_info set `姓名`='世恒1',`性别`=1,`年龄`=29,`身高`=1.72
update user_info set `性别`=1,`年龄`=27 where `姓名`='世恒'
select * from user_info where `姓名`='世恒1'
delete from user_info where `姓名`='李四' and `性别`=0
select * from user_info where `姓名` like '%世恒%'