polarDB云数据库创建和数据操作
目的和意义
熟悉阿里巴巴的polarDB云数据库产品的使用，通过对比，思考云数据库的先进性。学会基本的DDL和DML使用方法，学会主键的定义和外键的识别，学会数据库访问工具的使用，掌握数据库的基本操作，学会数据库的创建。
实验内容
在阿里云注册一个实名账号，和登录polarDB云数据，创建数据库用户，给用户赋权，登录数据库服务器，创建数据库，创建表，定义主键和外键，修改表的Schema；往表中添加数据，查询表中的数据，修改表中数据，删除表中数据。
阿里云平台中DMS数据库实验室的进入
-
在[阿里云开发者社区]（https://developer.aliyun.com/）, 免费注册一个实名认证的云账号;
-
打开DMS数据库实验室，进入的界面如下：
-
DMS是Database Management Service的缩写。点击界面中间的免费开通数据库栏中的第一项“polarDB-MySQL”的【立即开通】。即进入polarDB-MySQL数据库。界面左侧背景色为黑色的框中为数据库服务器实例的目录，双击polarDB for MySQL这一项，就可看到该实例下有一个名为 polardb_mysql_9051uav的数据库，再双击该数据库，右侧就会显示控制台。接下来就可输入SQL语句，并提交执行。
-
DMS数据库实验室入门介绍请看：https://help.aliyun.com/document_detail/172126.html?spm=5176.10695662.1996646101.searchclickresult.3e8f6cf92FluCp
-
DMS其实就是一个数据库管理工具。
具体任务
建表
写出教务管理数据库中如下8张表的DDL语句， 要求标识出每张表的主键，包含的外键，明确每个字段的域定义。然后在数据库中创建出这8张表来。
建表内容
其中学号的构成为：yyyyddsscnn。
其中yyyy为入学年级，dd为所在学院编号，ss为专业代码，c为班号，nn为序号。
建表语句
/*
author : haonan
Date: 18/11/2020 20:25:49
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for course
-- ----------------------------
DROP TABLE IF EXISTS `course`;
CREATE TABLE `course` (
`cno` char(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'课程编号\',
`name` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'课程名称\',
`spno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'专业代码（外键）\',
`ctno` char(1) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'课程类型编号（外键）\',
`hours` smallint NULL DEFAULT NULL COMMENT \'实验时数\',
`experiment` smallint NULL DEFAULT NULL COMMENT \' 授课学时数\',
`credit` smallint NULL DEFAULT NULL COMMENT \'课程学分\',
`semester` smallint NULL DEFAULT NULL COMMENT \' 开课学期\',
`duty_tno` char(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 课程责任老师的工号\',
`dno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 负责开课的学院编号\',
PRIMARY KEY (`cno`) USING BTREE,
INDEX `ctno`(`ctno`) USING BTREE,
INDEX `spno`(`spno`) USING BTREE,
CONSTRAINT `ctno` FOREIGN KEY (`ctno`) REFERENCES `coursetype` (`ctno`) ON DELETE RESTRICT ON UPDATE RESTRICT,
CONSTRAINT `spno` FOREIGN KEY (`spno`) REFERENCES `speciality` (`spno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for coursetype
-- ----------------------------
DROP TABLE IF EXISTS `coursetype`;
CREATE TABLE `coursetype` (
`ctno` char(1) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'类型编号\',
`ctname` varchar(16) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'类型名称\',
PRIMARY KEY (`ctno`) USING BTREE,
INDEX `ctno`(`ctno`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for department
-- ----------------------------
DROP TABLE IF EXISTS `department`;
CREATE TABLE `department` (
`dno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'学院编号\',
`name` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'学院名称\',
`dean` char(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'院长（外键：引用教师表的主键）\',
`addr` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'院系办公地址\',
`phone` varchar(12) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'联系电话\',
PRIMARY KEY (`dno`) USING BTREE,
INDEX `dean`(`dean`) USING BTREE,
CONSTRAINT `dean` FOREIGN KEY (`dean`) REFERENCES `teacher` (`tno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for enroll
-- ----------------------------
DROP TABLE IF EXISTS `enroll`;
CREATE TABLE `enroll` (
`sno` char(11) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'学生学号\',
`cno` char(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'课程编号\',
`year_semeste` char(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'学年学期\',
`tno` char(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'教师编号（外键）\',
`classno` char(1) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'上课的班级号\',
`score` float NULL DEFAULT NULL COMMENT \'学生成绩\',
PRIMARY KEY (`sno`, `cno`, `year_semeste`) USING BTREE,
INDEX `e_tno`(`tno`) USING BTREE,
CONSTRAINT `e_tno` FOREIGN KEY (`tno`) REFERENCES `teacher` (`tno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for speciality
-- ----------------------------
DROP TABLE IF EXISTS `speciality`;
CREATE TABLE `speciality` (
`spno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \' 专业代码\',
`spname` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'专业名称\',
`dno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'所属院系编号\',
PRIMARY KEY (`spno`) USING BTREE,
INDEX `spno`(`spno`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for student
-- ----------------------------
DROP TABLE IF EXISTS `student`;
CREATE TABLE `student` (
`sno` char(11) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \' 学生学号\',
`sname` varchar(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'学生姓名\',
`sex` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 学生性别\',
`nation` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 民族\',
`birthday` date NULL DEFAULT NULL COMMENT \' 学生出生日期\',
`classno` char(7) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'行政班级号\',
`dno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 学生所在院系编号\',
`spno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'专业代码（外键）\',
`entime` char(4) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'学生入校年纪\',
`home` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 学生家庭住址\',
`tel` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'学生联系电话\',
PRIMARY KEY (`sno`) USING BTREE,
INDEX `st_spno`(`spno`) USING BTREE,
CONSTRAINT `st_spno` FOREIGN KEY (`spno`) REFERENCES `speciality` (`spno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for teach
-- ----------------------------
DROP TABLE IF EXISTS `teach`;
CREATE TABLE `teach` (
`cno` char(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'课程编号（外键）\',
`year_semester` char(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'学年学期\',
`tno` char(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'教师编号（外键）\',
`classno` char(1) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'上课的班级\',
PRIMARY KEY (`cno`, `year_semester`, `tno`, `classno`) USING BTREE,
INDEX `t_tno`(`tno`) USING BTREE,
CONSTRAINT `t_cno` FOREIGN KEY (`cno`) REFERENCES `course` (`cno`) ON DELETE RESTRICT ON UPDATE RESTRICT,
CONSTRAINT `t_tno` FOREIGN KEY (`tno`) REFERENCES `teacher` (`tno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
-- ----------------------------
-- Table structure for teacher
-- ----------------------------
DROP TABLE IF EXISTS `teacher`;
CREATE TABLE `teacher` (
`tno` char(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'教师工号\',
`name` varchar(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT \'教师姓名\',
`sex` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'教师性别\',
`birthday` date NULL DEFAULT NULL COMMENT \'教师出生日期\',
`rank` varchar(8) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'教师职称\',
`salary` int NULL DEFAULT NULL COMMENT \'月工资\',
`dno` char(2) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'教师所在学院编号\',
`home` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'教师家庭住址\',
`zipcode` char(3) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 邮政编码\',
`tel` varchar(12) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \' 联系电话\',
`email` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT \'电子邮件\',
PRIMARY KEY (`tno`) USING BTREE,
INDEX `dno`(`dno`) USING BTREE,
CONSTRAINT `dno` FOREIGN KEY (`dno`) REFERENCES `department` (`dno`) ON DELETE RESTRICT ON UPDATE RESTRICT
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = Dynamic;
SET FOREIGN_KEY_CHECKS = 1;
插入数据
插入数据内容
插入数据语句
- department
INSERT INTO `department`(`dno`, `name`, `dean`, `addr`, `phone`) VALUES (\'24\', \'信息科学与工程学院\', \'2011120\', \'软件楼\', \'8305424\');
INSERT INTO `department`(`dno`, `name`, `dean`, `addr`, `phone`) VALUES (\'27\', \'数学院\', \'2007004\', \'数学楼\', \'8304551\');
INSERT INTO `department`(`dno`, `name`, `dean`, `addr`, `phone`) VALUES (\'28\', \'工商管理学院\', \'2009007\', \'MBA楼\', \'8304530\');
INSERT INTO `department`(`dno`, `name`, `dean`, `addr`, `phone`) VALUES (\'29\', \'会计学院\', \'1995008\', \'逸夫楼\', \'8304578\');
INSERT INTO `department`(`dno`, `name`, `dean`, `addr`, `phone`) VALUES (\'31\', \'政治理论学院\', \'20011024\', \'红叶楼\', \'8304517\');
INSERT INTO `department`(`dno`, `name`, `dean`, `addr`, `phone`) VALUES (\'32\', \'机械学院\', \'20001021\', \'宇航楼\', \'8304534\');
INSERT INTO `department`(`dno`, `name`, `dean`, `addr`, `phone`) VALUES (\'33\', \'工业设计学院\', \'19971004\', \'设计大楼\', \'8305204\');
- teacher
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'1995008\', \'陈浪\', \'男\', \'1979-03-30\', \'教授\', 7880, \'29\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'1997030\', \'刘小明\', \'女\', \'1979-03-30\', \'教授\', 9700, \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'19971004\', \'赵子龙\', \'男\', \'1979-03-30\', \'教授\', 9650, \'33\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'20001021\', \'张国荣\', \'男\', \'1973-04-12\', \'教授\', 8950, \'32\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'2000121\', \'李平\', \'男\', \'1973-04-12\', \'助教\', 7500, \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'2001009\', \'周曼玲\', \'女\', \'1972-09-09\', \'副教授\', 8600, \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'20011024\', \'刘亚平\', \'女\', \'1972-09-09\', \'教授\', 10800, \'31\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'20041024\', \'朱喜\', \'男\', \'1985-01-09\', \'副教授\', 8500, \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'2004124\', \'刘东妮\', \'女\', \'1985-01-09\', \'助教\', 7200, \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'2007004\', \'张中华\', \'男\', \'1972-09-09\', \'教授\', 9850, \'27\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'20081003\', \'马千里\', \'男\', \'1979-03-30\', \'副教授\', 8850, \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'2009007\', \'马力\', \'女\', \'1973-04-12\', \'教授\', 8650, \'28\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'20111104\', \'王林林\', \'女\', \'1962-12-11\', \'助教\', 7900, \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `teacher`(`tno`, `name`, `sex`, `birthday`, `rank`, `salary`, `dno`, `home`, `zipcode`, `tel`, `email`) VALUES (\'2011120\', \'万世平\', \'男\', \'1962-12-11\', \'教授\', 9900, \'24\', NULL, NULL, NULL, NULL);
- student
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401101\', \'李毅\', \'男\', \'汉\', \'1985-01-02\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401102\', \'厉超\', \'男\', \'苗\', \'1984-03-08\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401103\', \'梁冰龙\', \'男\', \'壮\', \'1984-07-09\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401104\', \'罗煦\', \'女\', \'维吾尔\', \'1985-10-12\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401105\', \'马晓睿\', \'男\', \'汉\', \'1983-11-01\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401106\', \'聂立业\', \'男\', \'壮\', \'1984-06-03\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401107\', \'王实\', \'男\', \'汉\', \'1984-02-11\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401108\', \'伍卉\', \'女\', \'汉\', \'1985-01-03\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401109\', \'伍琼\', \'男\', \'汉\', \'1985-12-11\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401110\', \'曾文超\', \'男\', \'汉\', \'1984-07-05\', \'软件1班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401201\', \'黄文杰\', \'男\', \'汉\', \'1984-07-05\', \'软件2班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182401202\', \'龙淼\', \'男\', \'汉\', \'1985-12-11\', \'软件2班\', \'24\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182709101\', \'何晓明\', \'男\', \'汉\', \'1984-08-13\', \'营销1班\', \'27\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182709102\', \'刘寅\', \'男\', \'汉\', \'1984-05-07\', \'营销1班\', \'27\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182911101\', \'邢晓静\', \'女\', \'汉\', \'1984-08-13\', \'电算1班\', \'28\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182911102\', \'李明伟\', \'女\', \'汉\', \'1985-03-09\', \'电算1班\', \'28\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182911103\', \'童熙\', \'女\', \'汉\', \'1985-10-16\', \'电算1班\', \'28\', NULL, NULL, NULL, NULL);
INSERT INTO `student`(`sno`, `sname`, `sex`, `nation`, `birthday`, `classno`, `dno`, `spno`, `entime`, `home`, `tel`) VALUES (\'20182911104\', \'朱俊华\', \'男\', \'汉\', \'1985-12-03\', \'电算1班\', \'28\', NULL, NULL, NULL, NULL);
- course
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'C24020005\', \'面向对象程序设计\', NULL, \'2\', 32, 24, 2, 5, \'20111104\', \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'C31010001\', \'毛z东思想概论\', NULL, \'1\', 32, NULL, 2, 6, NULL, \'31\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'C31010002\', \'邓x平理论\', NULL, \'1\', 62, NULL, 2, 1, NULL, \'31\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'H24030006\', \'数据结构\', NULL, \'2\', 64, 24, 4, 4, \'2004124\', \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'H24030007\', \'计算机组成原理\', NULL, \'2\', 64, NULL, 4, 5, \'2011120\', \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'H24030008\', \'数据库系统\', NULL, \'3\', 48, 24, 3, 5, \'2001009\', \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'H24030009\', \'操作系统\', NULL, \'3\', 48, 24, 3, 4, \'2000121\', \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'H24030010\', \'计算机网络\', NULL, \'3\', 48, 16, 3, 6, \'1997030\', \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'X24040019\', \'数据挖掘\', \'2\', \'4\', 32, NULL, 2, 7, NULL, \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'X24040022\', \'网络安全概论\', \'2\', \'4\', 32, NULL, 2, 7, NULL, \'24\');
INSERT INTO `course`(`cno`, `name`, `spno`, `ctno`, `hours`, `experiment`, `credit`, `semester`, `duty_tno`, `dno`) VALUES (\'X27020012\', \'高等数学\', NULL, \'1\', 64, NULL, 4, 2, \'2007004\', \'27\');
- teach
INSERT INTO `teach`(`cno`, `year_semester`, `tno`, `classno`) VALUES (\'C31010001\', \'2019-01-01\', \'20011024\', \'A\');
INSERT INTO `teach`(`cno`, `year_semester`, `tno`, `classno`) VALUES (\'C31010001\', \'2019-01-01\', \'20011024\', \'B\');
INSERT INTO `teach`(`cno`, `year_semester`, `tno`, `classno`) VALUES (\'C24020005\', \'2019-02-01\', \'2009007\', \'A\');
- enroll
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401101\', \'C31010001\', \'2019-01-01\', \'20011024\', \'A\', 88);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401101\', \'H24030006\', \'2019-01-01\', \'2004124\', \'A\', 89);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401101\', \'H24030008\', \'2020-01-01\', \'2001009\', \'A\', 83);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401102\', \'H24030006\', \'2019-01-01\', \'2004124\', \'A\', 98);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401102\', \'H24030008\', \'2020-01-01\', \'2001009\', \'A\', 66);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401102\', \'X27030019\', \'2019-02-01\', \'2007004\', \'B\', 90);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401103\', \'H24030006\', \'2019-01-01\', \'2004124\', \'A\', 86);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401103\', \'H24030008\', \'2020-01-01\', \'2001009\', \'A\', 55);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401104\', \'H24030006\', \'2019-01-01\', \'2004124\', \'B\', 76);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401104\', \'H24030008\', \'2020-01-01\', \'2001009\', \'B\', 87);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182401202\', \'C31010001\', \'2019-01-01\', \'20011024\', \'A\', 88);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182709101\', \'C31010001\', \'2019-01-01\', \'20011024\', \'A\', 90);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182709102\', \'C24020005\', \'2019-02-01\', \'2009007\', \'A\', 83);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182911101\', \'C24020005\', \'2019-02-01\', \'2009007\', \'A\', 66);
INSERT INTO `enroll`(`sno`, `cno`, `year_semeste`, `tno`, `classno`, `score`) VALUES (\'20182911101\', \'C31010001\', \'2019-01-01\', \'20011024\', \'B\', 87);
- speciality
INSERT INTO `speciality`(`spno`, `spname`, `dno`) VALUES (\'1\', \'软件工程\', \'24\');
INSERT INTO `speciality`(`spno`, `spname`, `dno`) VALUES (\'11\', \'电算会计\', \'29\');
INSERT INTO `speciality`(`spno`, `spname`, `dno`) VALUES (\'2\', \'人工智能\', \'24\');
INSERT INTO `speciality`(`spno`, `spname`, `dno`) VALUES (\'3\', \'物联网\', \'24\');
INSERT INTO `speciality`(`spno`, `spname`, `dno`) VALUES (\'4\', \'网络安全\', \'24\');
INSERT INTO `speciality`(`spno`, `spname`, `dno`) VALUES (\'8\', \'工商管理\', \'28\');
INSERT INTO `speciality`(`spno`, `spname`, `dno`) VALUES (\'9\', \'市场营销\', \'28\');
- coursetype
INSERT INTO `coursetype`(`ctno`, `ctname`) VALUES (\'1\', \'公共课\');
INSERT INTO `coursetype`(`ctno`, `ctname`) VALUES (\'2\', \'专业基础课\');
INSERT INTO `coursetype`(`ctno`, `ctname`) VALUES (\'3\', \'专业课\');
INSERT INTO `coursetype`(`ctno`, `ctname`) VALUES (\'4\', \'选修课\');
SQL语句练习
对于如下业务需求，写出获取所须数据的SQL语句：
- 输出信息科学与工程学院（学院编号“24”）2018级学生“李毅”的课程选修成绩单，输出项包括课程名称，学分，成绩三项；
SELECT
c.`name`,
c.credit,
e.score
FROM
course c,
enroll e
WHERE
c.dno = \'24\' AND c.ctno = (SELECT coursetype.ctno FROM coursetype WHERE coursetype.ctname = \'选修课\') AND e.sno = (SELECT student.sno FROM student WHERE student.sname = \'李毅\' AND student.sno LIKE \'2018%\');
2. 找出学生李毅（学号为 ‘20182401101’）的电话；
SELECT
tel
FROM
student
WHERE
sname = \'李毅\';
3. 输出信息科学与工程学院（学院编号为’24’)的学生清单，输出项包括姓名，学号，班级三列，按照班级和学号排序；
SELECT
sname,
sno,
classno
FROM
student
WHERE
dno=\'24\';
- 输出所有学院的清单，包括学院编号，名称，地址，电话，院长姓名；
SELECT
department.dno,
department.`name`,
department.addr,
department.phone,
teacher.`name`
FROM
department
LEFT JOIN teacher ON teacher.tno = department.dean;
5. 在2020-1学期选修了周曼玲老师（工号为”2001009”)开设的“数据库系统”课程的学生名单，输出项为五项：教学班，姓名、学号、性别，行政班。要求先按照教学班，再按行政班排序；（注：一个老师在某个学期开的某门课，完全有可能有多个教学班）；
SELECT
enroll.classno,
student.sname,
student.sno,
student.sex,
student.classno
FROM
enroll,
student
WHERE
student.sno = ANY (
SELECT
enroll.sno
FROM
enroll
WHERE
year_semeste LIKE \'2020-01%\'
AND tno = \'2001009\');
6. 对于在2020-1学期选修了“数据库系统”课程的各行政班，求其平均分，并按照平均分从高到低排序；
SELECT DISTINCT
enroll.classno,
AVG( enroll.score ) AS AVG_SCORE
FROM
enroll
WHERE
enroll.cno = ( SELECT course.cno FROM course WHERE course.`name` = \'数据库系统\' )
GROUP BY
enroll.classno
ORDER BY
AVG_SCORE;
- 对于信息科学与工程学院（学院编号“24”）在2020-1学期开设的每门课程，输出其选修人数，输出项包括课程名称，选修人数；
SELECT
course.`name`,
COUNT( DISTINCT enroll.sno ) AS COUNT
FROM
course,
enroll
WHERE
course.dno = \'24\'
AND course.cno = ANY ( SELECT enroll.cno FROM enroll WHERE enroll.year_semeste LIKE \'2020-01%\' )
GROUP BY
course.`name`;
8. 在2020-1学期，对于开设的“数据库系统”这门课程，在信息科学与工程学院（学院编号“24”）的2018级学生中，有哪些学生没有选修该课程，输出姓名，学号，行政班三项信息；
SELECT
sname,
sno,
classno
FROM
student s
WHERE
s.dno = \'24\' AND
NOT EXISTS (
SELECT
*
FROM
enroll e
WHERE
e.year_semeste LIKE \'2020-01%\'
AND s.sno = e.sno
AND e.cno = ( SELECT c.cno FROM course c WHERE c.`name` = \'数据库系统\' ));
9. 对于在2020-1学期开设的每门课程，输出其最高分、最低分，平均分；
SELECT
MAX( score ) AS MAX,
MIN( score ) AS MIN,
AVG( score ) AS AVG
FROM
enroll
WHERE
year_semeste LIKE \'2020-01%\';
- 对于在2020-1学期开设的“数据库系统”课程，求选修了该课，但是没有及格的学生名单，输出姓名，学号，行政班，课程成绩四项信息；
SELECT
sname,
sno,
classno
FROM
student s
WHERE
EXISTS (
SELECT
*
FROM
enroll e
WHERE
e.year_semeste LIKE \'2020-01%\'
AND e.score < \'60\'
AND s.sno = e.sno
AND e.cno = ( SELECT c.cno FROM course c WHERE c.`name` = \'数据库系统\' ));
11. 对于信息科学与工程学院（学院编号“24”）的每个教师，统计出其在2019年度的教学工作量；（提示：课程表中，每门课有课时量hours字段）
SELECT
teacher.`name`,
SUM( course.hours ) AS SUM
FROM
teacher,
course
WHERE
course.cno = ANY (
SELECT
enroll.cno
FROM
enroll
WHERE
enroll.year_semeste LIKE \'2019%\'
AND enroll.tno = ANY ( SELECT teacher.tno FROM teacher WHERE teacher.dno = \'24\' ))
GROUP BY
teacher.`name`;
12. 对于信息科学与工程学院（学院编号“24”）的每个教师，统计在2019年度教学工作量未达到要求（小于150学时）的教师，输出教师姓名，工号，教学工作量三项；
SELECT
teacher.`name`,
teacher.tno,
SUM( course.hours ) AS SUM
FROM
teacher,
course
WHERE
course.cno = ANY (
SELECT
enroll.cno
FROM
enroll
WHERE
enroll.year_semeste LIKE \'2019%\'
AND enroll.tno = ANY ( SELECT teacher.tno FROM teacher WHERE teacher.dno = \'24\' ))
GROUP BY
teacher.`name`
HAVING SUM( course.hours ) < \'150\';
13. 统计各个学院在2019年度的教学工作量；
SELECT
department.`name`,
SUM( course.hours )
FROM
department,
course
WHERE
department.dno = ALL (
SELECT
course.dno
FROM
course
WHERE
course.cno = ALL ( SELECT enroll.cno FROM enroll WHERE enroll.year_semeste LIKE \'2019%\' ))
GROUP BY
department.`name`;
14. 对于2016级学生，即将毕业，求出输出所得总学分不足172的学生，输出项为所属学院名称，学号，姓名，已得学分数这四项；
SELECT
department.`name`,
student.sno,
student.sname,
SUM( course.credit ) AS SUM
FROM
department,
student,
course
WHERE
department.dno = student.dno
AND course.cno = ALL (
SELECT
enroll.cno
FROM
enroll
WHERE
enroll.sno = ALL ( SELECT student.sno FROM student WHERE student.sno LIKE \'2016%\' ))
GROUP BY
student.sno
HAVING
SUM( course.credit ) < \'172\';