From ae118f454fa01aba687b2d36975f9d9bbf4327fb Mon Sep 17 00:00:00 2001
From: Your Name <2970307356@qq.com>
Date: Fri, 17 Feb 2023 16:06:06 +0800
Subject: [PATCH] =?UTF-8?q?=E5=88=9B=E5=BB=BA=E6=95=B0=E6=8D=AE=E5=BA=93?=
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 create mode 100644 "09\346\241\202\346\263\275\347\205\234/\345\210\233\345\273\272\346\225\260\346\215\256\345\272\223class3.md"

diff --git "a/09\346\241\202\346\263\275\347\205\234/\345\210\233\345\273\272\346\225\260\346\215\256\345\272\223class3.md" "b/09\346\241\202\346\263\275\347\205\234/\345\210\233\345\273\272\346\225\260\346\215\256\345\272\223class3.md"
new file mode 100644
index 0000000..78ccb5f
--- /dev/null
+++ "b/09\346\241\202\346\263\275\347\205\234/\345\210\233\345\273\272\346\225\260\346\215\256\345\272\223class3.md"
@@ -0,0 +1,73 @@
+``` mysql
+创建数据库：
+mysql> create database class3;
+Query OK, 1 row affected (0.00 sec)
+查看所有数据库：
+mysql> show databases;
++--------------------+
+| Database           |
++--------------------+
+| information_schema |
+| class3             |
+| mysql              |
+| performance_schema |
+| sys                |
++--------------------+
+5 rows in set (0.00 sec)
+使用class3数据库：
+mysql> use class3;
+Database changed
+创建学生表：
+mysql> create table student(
+    -> id int comment 'id',
+    -> name varchar(50) comment 'name',
+    -> gender varchar(1) comment 'sex',
+    -> hobby text comment 'hobby',
+    -> address text comment 'address',
+    -> lxfs int comment 'lxfs',
+    -> email varchar(32) comment 'email',
+    -> qqnumber int comment 'QQ'
+    -> ) comment 'student';
+Query OK, 0 rows affected (0.24 sec)
+查询当前数据的所有表：
+mysql> show tables;
++------------------+
+| Tables_in_class3 |
++------------------+
+| student          |
++------------------+
+1 row in set (0.00 sec)
+查看表的建表语句：
+mysql> show create table student;
++---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| Table   | Create Table                                                                                                                                                                                                                                                                                                                                                                                                                                         |
++---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| student | CREATE TABLE `student` (
+  `id` int(11) DEFAULT NULL COMMENT 'id',
+  `name` varchar(50) DEFAULT NULL COMMENT 'name',
+  `gender` varchar(1) DEFAULT NULL COMMENT 'sex',
+  `hobby` text COMMENT 'hobby',
+  `address` text COMMENT 'address',
+  `lxfs` int(11) DEFAULT NULL COMMENT 'lxfs',
+  `email` varchar(32) DEFAULT NULL COMMENT 'email',
+  `qqnumber` int(11) DEFAULT NULL COMMENT 'QQ'
+) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='student' |
++---------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+1 row in set (0.01 sec)
+查看表结构：
+mysql> desc student;
++----------+-------------+------+-----+---------+-------+
+| Field    | Type        | Null | Key | Default | Extra |
++----------+-------------+------+-----+---------+-------+
+| id       | int(11)     | YES  |     | NULL    |       |
+| name     | varchar(50) | YES  |     | NULL    |       |
+| gender   | varchar(1)  | YES  |     | NULL    |       |
+| hobby    | text        | YES  |     | NULL    |       |
+| address  | text        | YES  |     | NULL    |       |
+| lxfs     | int(11)     | YES  |     | NULL    |       |
+| email    | varchar(32) | YES  |     | NULL    |       |
+| qqnumber | int(11)     | YES  |     | NULL    |       |
++----------+-------------+------+-----+---------+-------+
+8 rows in set (0.00 sec)
+```
+
-- 
Gitee