MySQL数据库测试数据导入脚本与基础查询操作

一、导入hellodb.sql生成数据库

1.1 系统环境

内容	版本信息
操作系统	CentOS Linux release 7.8.2003 (Core)
MySQL Server	5.7.32 MySQL Community Server - (GPL)
IP172.20.200.131 192.168.17.122

准备hellodb_innodb.sql脚本

---- Current Database: `hellodb`--CREATE DATABASE  `hellodb`;USE `hellodb`;---- Table structure for table `classes`--DROP TABLE IF EXISTS `classes`;CREATE TABLE `classes` (  `ClassID` tinyint(3) unsigned NOT NULL AUTO_INCREMENT,  `Class` varchar(100) DEFAULT NULL,  `NumOfStu` smallint(5) unsigned DEFAULT NULL,  PRIMARY KEY (`ClassID`)) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8;---- Dumping data for table `classes`--LOCK TABLES `classes` WRITE;INSERT INTO `classes` VALUES (1,'Shaolin Pai',10),(2,'Emei Pai',7),(3,'QingCheng Pai',11),(4,'Wudang Pai',12),(5,'Riyue Shenjiao',31),(6,'Lianshan Pai',27),(7,'Ming Jiao',27),(8,'Xiaoyao Pai',15);UNLOCK TABLES;---- Table structure for table `coc`--DROP TABLE IF EXISTS `coc`;CREATE TABLE `coc` (  `ID` int(10) unsigned NOT NULL AUTO_INCREMENT,  `ClassID` tinyint(3) unsigned NOT NULL,  `CourseID` smallint(5) unsigned DEFAULT NULL,  PRIMARY KEY (`ID`)) ENGINE=InnoDB AUTO_INCREMENT=15 DEFAULT CHARSET=utf8;---- Dumping data for table `coc`--LOCK TABLES `coc` WRITE;INSERT INTO `coc` VALUES (1,1,2),(2,1,5),(3,2,2),(4,2,6),(5,3,1),(6,3,7),(7,4,5),(8,4,2),(9,5,1),(10,5,9),(11,6,3),(12,6,4),(13,7,4),(14,7,3);UNLOCK TABLES;---- Table structure for table `courses`--DROP TABLE IF EXISTS `courses`;CREATE TABLE `courses` (  `CourseID` smallint(5) unsigned NOT NULL AUTO_INCREMENT,  `Course` varchar(100) NOT NULL,  PRIMARY KEY (`CourseID`)) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;---- Dumping data for table `courses`--LOCK TABLES `courses` WRITE;INSERT INTO `courses` VALUES (1,'Hamo Gong'),(2,'Kuihua Baodian'),(3,'Jinshe Jianfa'),(4,'Taiji Quan'),(5,'Daiyu Zanghua'),(6,'Weituo Zhang'),(7,'Dagou Bangfa');UNLOCK TABLES;---- Table structure for table `scores`--DROP TABLE IF EXISTS `scores`;CREATE TABLE `scores` (  `ID` int(10) unsigned NOT NULL AUTO_INCREMENT,  `StuID` int(10) unsigned NOT NULL,  `CourseID` smallint(5) unsigned NOT NULL,  `Score` tinyint(3) unsigned DEFAULT NULL,  PRIMARY KEY (`ID`)) ENGINE=InnoDB AUTO_INCREMENT=16 DEFAULT CHARSET=utf8;---- Dumping data for table `scores`--LOCK TABLES `scores` WRITE;INSERT INTO `scores` VALUES (1,1,2,77),(2,1,6,93),(3,2,2,47),(4,2,5,97),(5,3,2,88),(6,3,6,75),(7,4,5,71),(8,4,2,89),(9,5,1,39),(10,5,7,63),(11,6,1,96),(12,7,1,86),(13,7,7,83),(14,8,4,57),(15,8,3,93);UNLOCK TABLES;---- Table structure for table `students`--DROP TABLE IF EXISTS `students`;CREATE TABLE `students` (  `StuID` int(10) unsigned NOT NULL AUTO_INCREMENT,  `Name` varchar(50) NOT NULL,  `Age` tinyint(3) unsigned NOT NULL,  `Gender` enum('F','M') NOT NULL,  `ClassID` tinyint(3) unsigned DEFAULT NULL,  `TeacherID` int(10) unsigned DEFAULT NULL,  PRIMARY KEY (`StuID`)) ENGINE=InnoDB AUTO_INCREMENT=26 DEFAULT CHARSET=utf8;---- Dumping data for table `students`--LOCK TABLES `students` WRITE;INSERT INTO `students` VALUES (1,'Shi Zhongyu',22,'M',2,3),(2,'Shi Potian',22,'M',1,7),(3,'Xie Yanke',53,'M',2,16),(4,'Ding Dian',32,'M',4,4),(5,'Yu Yutong',26,'M',3,1),(6,'Shi Qing',46,'M',5,NULL),(7,'Xi Ren',19,'F',3,NULL),(8,'Lin Daiyu',17,'F',7,NULL),(9,'Ren Yingying',20,'F',6,NULL),(10,'Yue Lingshan',19,'F',3,NULL),(11,'Yuan Chengzhi',23,'M',6,NULL),(12,'Wen Qingqing',19,'F',1,NULL),(13,'Tian Boguang',33,'M',2,NULL),(14,'Lu Wushuang',17,'F',3,NULL),(15,'Duan Yu',19,'M',4,NULL),(16,'Xu Zhu',21,'M',1,NULL),(17,'Lin Chong',25,'M',4,NULL),(18,'Hua Rong',23,'M',7,NULL),(19,'Xue Baochai',18,'F',6,NULL),(20,'Diao Chan',19,'F',7,NULL),(21,'Huang Yueying',22,'F',6,NULL),(22,'Xiao Qiao',20,'F',1,NULL),(23,'Ma Chao',23,'M',4,NULL),(24,'Xu Xian',27,'M',NULL,NULL),(25,'Sun Dasheng',100,'M',NULL,NULL);UNLOCK TABLES;---- Table structure for table `teachers`--DROP TABLE IF EXISTS `teachers`;CREATE TABLE `teachers` (  `TID` smallint(5) unsigned NOT NULL AUTO_INCREMENT,  `Name` varchar(100) NOT NULL,  `Age` tinyint(3) unsigned NOT NULL,  `Gender` enum('F','M') DEFAULT NULL,  PRIMARY KEY (`TID`)) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;---- Dumping data for table `teachers`--LOCK TABLES `teachers` WRITE;INSERT INTO `teachers` VALUES (1,'Song Jiang',45,'M'),(2,'Zhang Sanfeng',94,'M'),(3,'Miejue Shitai',77,'F'),(4,'Lin Chaoying',93,'F');UNLOCK TABLES;---- Table structure for table `toc`--DROP TABLE IF EXISTS `toc`;CREATE TABLE `toc` (  `ID` int(10) unsigned NOT NULL AUTO_INCREMENT,  `CourseID` smallint(5) unsigned DEFAULT NULL,  `TID` smallint(5) unsigned DEFAULT NULL,  PRIMARY KEY (`ID`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;

运行sql脚本

[root@localhost ~]# mysql -uroot -p'MyNewPassword!112233'mysql: [Warning] Using a password on the command line interface can be insecure.Welcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 6Server version: 5.7.32 MySQL Community Server - (GPL)Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql> show databases;+--------------------+| Database           |+--------------------+| information_schema || mysql              || performance_schema || sys                |+--------------------+4 rows in set (0.01 sec)mysql> source /root/hellodb_innodb.sqlmysql> show databases;+--------------------+| Database           |+--------------------+| information_schema || hellodb            || mysql              || performance_schema || sys                |+--------------------+5 rows in set (0.00 sec)mysql> use hellodb;Database changedmysql> show tables;+-------------------+| Tables_in_hellodb |+-------------------+| classes           || coc               || courses           || scores            || students          || teachers          || toc               |+-------------------+7 rows in set (0.01 sec)

1.2 在students表中，查询年龄大于25岁，且为男性的同学的名字和年龄

mysql> use hellodb;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> mysql> select Name,Age from students where Age > 25 and Gender='M';+--------------+-----+| Name         | Age |+--------------+-----+| Xie Yanke    |  53 || Ding Dian    |  32 || Yu Yutong    |  26 || Shi Qing     |  46 || Tian Boguang |  33 || Xu Xian      |  27 || Sun Dasheng  | 100 |+--------------+-----+7 rows in set (0.00 sec)

1.3 以ClassID为分组依据，显示每组的平均年龄

mysql> select classid,avg(age) as 平均年龄 from students group by classid;+---------+--------------+| classid | 平均年龄     |+---------+--------------+|    NULL |      63.5000 ||       1 |      20.5000 ||       2 |      36.0000 ||       3 |      20.2500 ||       4 |      24.7500 ||       5 |      46.0000 ||       6 |      20.7500 ||       7 |      19.6667 |+---------+--------------+8 rows in set (0.00 sec)

1.4 以ClassID为分组依据，显示平均年龄大于30的分组及平均年龄

mysql> select classid,avg(age) as 平均年龄 from students group by classid having avg(age) >30;+---------+--------------+| classid | 平均年龄     |+---------+--------------+|    NULL |      63.5000 ||       2 |      36.0000 ||       5 |      46.0000 |+---------+--------------+3 rows in set (0.00 sec)

1.5 显示以L开头的名字的同学的信息

mysql> select * from students where name like 'L%';+-------+-------------+-----+--------+---------+-----------+| StuID | Name        | Age | Gender | ClassID | TeacherID |+-------+-------------+-----+--------+---------+-----------+|     8 | Lin Daiyu   |  17 | F      |       7 |      NULL ||    14 | Lu Wushuang |  17 | F      |       3 |      NULL ||    17 | Lin Chong   |  25 | M      |       4 |      NULL |+-------+-------------+-----+--------+---------+-----------+3 rows in set (0.00 sec)

二、数据库授权magedu用户，允许192.168.17.0/24网段可以连接mysql

#MySQL Server端增加192.168.17网段地址[root@localhost ~]# ip add add 192.168.17.122 dev eth0 label eth0:1[root@localhost ~]# systemctl restart mysqld#加密密码mysql> select password('Magedu112233!');+-------------------------------------------+| password('Magedu112233!')                 |+-------------------------------------------+| *1403418EB84FFD259ED024853D5455172CD03A62 |+-------------------------------------------+1 row in set, 1 warning (0.00 sec)#创建magedu用户mysql> create user 'magedu'@'192.168.17.%' identified by '*1403418EB84FFD259ED024853D5455172CD03A62';Query OK, 0 rows affected (0.00 sec)mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)

登录192.168.17网段电脑，测试登录情况

[root@slave ~]# ifconfigeth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 172.20.200.202  netmask 255.255.0.0  broadcast 172.20.255.255        inet6 fe80::8d83:991b:3df5:2457  prefixlen 64  scopeid 0x20<link>        ether 00:0c:29:90:19:8f  txqueuelen 1000  (Ethernet)        RX packets 10233  bytes 13257774 (12.6 MiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 5562  bytes 389911 (380.7 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0eth0:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500        inet 192.168.17.123  netmask 255.255.255.255  broadcast 0.0.0.0        ether 00:0c:29:90:19:8f  txqueuelen 1000  (Ethernet)#连接MySQL服务器的192.168.17.122地址[root@slave ~]# mysql -h192.168.17.122 -umagedu -p'Magedu112233!'mysql: [Warning] Using a password on the command line interface can be insecure.Welcome to the MySQL monitor.  Commands end with ; or \g.Your MySQL connection id is 8Server version: 5.7.32 MySQL Community Server - (GPL)Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql>

MySQL数据库测试数据导入脚本与基础查询操作

MySQL数据库测试数据导入脚本与基础查询操作

一、导入hellodb.sql生成数据库

二、数据库授权magedu用户，允许192.168.17.0/24网段可以连接mysql

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