CRUD.sql · peiss/ant-python-mysql

代码拉取完成,页面将自动刷新

扫描微信二维码支付

取消

支付完成

richgiteeai

Watch

不关注关注所有动态仅关注版本发行动态关注但不提醒动态

1 Star 4 Fork 5

peiss/ant-python-mysql

代码 Issues 0 Pull Requests 0 Wiki 统计流水线

服务

加入 Gitee

与超过 1400万开发者一起发现、参与优秀开源项目,私有仓库也完全免费 :)

免费加入

已有帐号? 立即登录

文件

master

分支 (1)

管理

master

克隆/下载

HTTPS SSH SVN SVN+SSH 下载ZIP

提示

下载代码请复制以下命令到终端执行

为确保你提交的代码身份被 Gitee 正确识别,请执行以下命令完成配置

git config --global user.name userName 
git config --global user.email userEmail

初次使用 SSH 协议进行代码克隆、推送等操作时,需按下述提示完成 SSH 配置

1 生成 RSA 密钥

2 获取 RSA 公钥内容,并配置到 SSH公钥中

在 Gitee 上使用 SVN,请访问使用指南

使用 HTTPS 协议时,命令行会出现如下账号密码验证步骤。基于安全考虑,Gitee 建议配置并使用私人令牌替代登录密码进行克隆、推送等操作

Username for 'https://gitee.com': userName

Password for 'https://userName@gitee.com': # 私人令牌

分支 1

标签 0

ant-python-mysql

CRUD.sql

CRUD.sql 2.72 KB

use test;

drop table student;

create table student(
 stu_id int auto_increment,
 name varchar(3),
 gender char(1),
 age int,
 primary key(stu_id)
);

show tables;

desc student;

insert into student
 (name, gender, age)
values 
 ('张磊磊', '男', 4),
 ('王宝宝', '男', 10),
 ('李翠翠', '女', 11),
 ('赵香香', '女', 4),
 ('牛强强', '男', 13),
 ('周子阳', '男', 9),
 ('陆亦双', '女', 7);

select * from student;

select name from student;
-- ctrl d
select age from student;
select stu_id from student;

select name, age from student;
select name, age, gender from student;
select name, gender, age from student;
select stu_id, name, age, gender from student;

select * from student;

select * from student where age=4;
select * from student where name='赵香香';

select stu_id from student;
select name,age from student;
select name,age from student where gender='男';
select name,age from student where stu_id = age;
select * from student ;

select name, age from student;
-- ctrl d
select name as 姓名, age as 年龄 from student;
select name as 姓名, age as 年龄, gender as '性 别' from student;

desc student;

select * from student;
select * from student where name='赵香香';
update student set age=18 where name='赵香香';
update student set gender='男' where name='牛强强';

select * from student where gender='女';
update student set age=18 where gender='女';

select * from student;
-- 1、更新王宝宝的姓名为王大宝
select * from student where name='王宝宝';
update student set name='王大宝' where name='王宝宝';
-- 2、修改周子阳的年龄为10岁
select * from student where name='周子阳';
update student set age=10 where name='周子阳';
-- 3、修改所有男生的年龄为10岁
select * from student where gender='男';
update student set age=10 where gender='男';

select * from student;
select * from student where name='李翠翠';
delete from student where name='李翠翠';

drop table student;

create table student(
 stu_id int auto_increment,
 name varchar(3),
 gender char(1),
 age int,
 primary key(stu_id)
);

insert into student
 (name, gender, age)
values 
 ('张磊磊', '男', 4),
 ('王宝宝', '男', 10),
 ('李翠翠', '女', 11),
 ('赵香香', '女', 4),
 ('牛强强', '男', 13),
 ('周子阳', '男', 9),
 ('陆亦双', '女', 7);
select * from student;

-- 题目1:删除所有4岁的学生;
select * from student where age=4; 
delete from student where age=4; 
-- 题目2:删除所有的年龄等于ID的学生;
select * from student where age=stu_id; 
delete from student where age=stu_id; 
-- 题目3:删除所有的学生
delete from student;

一键复制编辑原始数据按行查看历史

crazyant 提交于 2022年03月03日 00:38 +08:00 . 'xx'

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118

use test;

drop table student;

create table student(
 stu_id int auto_increment,
 name varchar(3),
 gender char(1),
 age int,
 primary key(stu_id)
);

show tables;

desc student;

insert into student
 (name, gender, age)
values 
 ('张磊磊', '男', 4),
 ('王宝宝', '男', 10),
 ('李翠翠', '女', 11),
 ('赵香香', '女', 4),
 ('牛强强', '男', 13),
 ('周子阳', '男', 9),
 ('陆亦双', '女', 7);

select * from student;

select name from student;
-- ctrl d
select age from student;
select stu_id from student;

select name, age from student;
select name, age, gender from student;
select name, gender, age from student;
select stu_id, name, age, gender from student;


select * from student;

select * from student where age=4;
select * from student where name='赵香香';

select stu_id from student;
select name,age from student;
select name,age from student where gender='男';
select name,age from student where stu_id = age;
select * from student ;


select name, age from student;
-- ctrl d
select name as 姓名, age as 年龄 from student;
select name as 姓名, age as 年龄, gender as '性 别' from student;

desc student;


select * from student;
select * from student where name='赵香香';
update student set age=18 where name='赵香香';
update student set gender='男' where name='牛强强';

select * from student where gender='女';
update student set age=18 where gender='女';


select * from student;
-- 1、更新王宝宝的姓名为王大宝
select * from student where name='王宝宝';
update student set name='王大宝' where name='王宝宝';
-- 2、修改周子阳的年龄为10岁
select * from student where name='周子阳';
update student set age=10 where name='周子阳';
-- 3、修改所有男生的年龄为10岁
select * from student where gender='男';
update student set age=10 where gender='男';

select * from student;
select * from student where name='李翠翠';
delete from student where name='李翠翠';


drop table student;

create table student(
 stu_id int auto_increment,
 name varchar(3),
 gender char(1),
 age int,
 primary key(stu_id)
);

insert into student
 (name, gender, age)
values 
 ('张磊磊', '男', 4),
 ('王宝宝', '男', 10),
 ('李翠翠', '女', 11),
 ('赵香香', '女', 4),
 ('牛强强', '男', 13),
 ('周子阳', '男', 9),
 ('陆亦双', '女', 7);
select * from student;


-- 题目1:删除所有4岁的学生;
select * from student where age=4; 
delete from student where age=4; 
-- 题目2:删除所有的年龄等于ID的学生;
select * from student where age=stu_id; 
delete from student where age=stu_id; 
-- 题目3:删除所有的学生
delete from student;