MySQL添加、更新、刪除數據

1、查詢數據

select * from student;

2、添加數據

insert into student values(1,"張三","男",23,'1999-12-23','Java001','zhangsan@qq.com');

可以添加兩條相同的數據，因為沒有創建相應的約束constraint

insert into student values(1,"張三","男",23,'1999-12-23','Java001','zhangsan@qq.com');

也可以添加指定位置的數據，其他位置默認為空

insert into student (sno,name,sex,classname)values (3,"王五","男","Java002");

日期有多種寫法，具體可以看我上一篇博客https://blog.csdn.net/qq_48759664/article/details/115578645

insert into student values(2,'李四','男',24,"1999/12/23","Java001","lisi@qq.com");

3、修改數據

update student set sex='女' where sno=2;

4、刪除數據

delete from student where email is null;

刪除數據庫表student中所有數據

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總結

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