.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

pom.xml

@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.bwie</groupId>
-    <artifactId>untitled</artifactId>
+    <artifactId>ria-02</artifactId>
     <version>1.0-SNAPSHOT</version>
 
     <properties>

ria_02.sql

@@ -0,0 +1,87 @@
+/*
+ Navicat Premium Data Transfer
+
+ Source Server         : 2112
+ Source Server Type    : MySQL
+ Source Server Version : 50557
+ Source Host           : localhost:3306
+ Source Schema         : ria_02
+
+ Target Server Type    : MySQL
+ Target Server Version : 50557
+ File Encoding         : 65001
+
+ Date: 19/07/2024 09:08:48
+*/
+
+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- ----------------------------
+-- Table structure for stu_cou
+-- ----------------------------
+DROP TABLE IF EXISTS `stu_cou`;
+CREATE TABLE `stu_cou`  (
+  `sc_id` int(11) NOT NULL AUTO_INCREMENT,
+  `c_id` int(12) NULL DEFAULT NULL,
+  `s_id` int(13) NULL DEFAULT NULL,
+  PRIMARY KEY (`sc_id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 10 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
+
+-- ----------------------------
+-- Records of stu_cou
+-- ----------------------------
+INSERT INTO `stu_cou` VALUES (1, 1, 1);
+INSERT INTO `stu_cou` VALUES (2, 1, 2);
+INSERT INTO `stu_cou` VALUES (3, 1, 3);
+INSERT INTO `stu_cou` VALUES (4, 2, 4);
+INSERT INTO `stu_cou` VALUES (5, 2, 5);
+INSERT INTO `stu_cou` VALUES (6, 2, 6);
+INSERT INTO `stu_cou` VALUES (7, 3, 7);
+INSERT INTO `stu_cou` VALUES (8, 3, 8);
+INSERT INTO `stu_cou` VALUES (9, 3, 9);
+
+-- ----------------------------
+-- Table structure for t_course
+-- ----------------------------
+DROP TABLE IF EXISTS `t_course`;
+CREATE TABLE `t_course`  (
+  `c_id` int(11) NOT NULL AUTO_INCREMENT,
+  `c_name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  PRIMARY KEY (`c_id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
+
+-- ----------------------------
+-- Records of t_course
+-- ----------------------------
+INSERT INTO `t_course` VALUES (1, '正课');
+INSERT INTO `t_course` VALUES (2, '自习');
+INSERT INTO `t_course` VALUES (3, '晚自习');
+
+-- ----------------------------
+-- Table structure for t_student
+-- ----------------------------
+DROP TABLE IF EXISTS `t_student`;
+CREATE TABLE `t_student`  (
+  `s_id` int(11) NOT NULL AUTO_INCREMENT,
+  `s_name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  `sex` varchar(3) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
+  PRIMARY KEY (`s_id`) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 12 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
+
+-- ----------------------------
+-- Records of t_student
+-- ----------------------------
+INSERT INTO `t_student` VALUES (1, '牛1', '男');
+INSERT INTO `t_student` VALUES (2, '牛2', '女');
+INSERT INTO `t_student` VALUES (3, '牛3', '男');
+INSERT INTO `t_student` VALUES (4, '牛4', '男');
+INSERT INTO `t_student` VALUES (5, '牛5', '女');
+INSERT INTO `t_student` VALUES (6, '牛6', '男');
+INSERT INTO `t_student` VALUES (7, '牛7', '女');
+INSERT INTO `t_student` VALUES (8, '牛8', '女');
+INSERT INTO `t_student` VALUES (9, '牛9', '男');
+INSERT INTO `t_student` VALUES (10, '牛腾', '男');
+INSERT INTO `t_student` VALUES (11, '牛10', '女');
+
+SET FOREIGN_KEY_CHECKS = 1;

src/sql/ria_01.sql

@@ -1,29 +0,0 @@
--- 依据上图（字段类型一致），创建数据库
-CREATE DATABASE ria_01
-use ria_01
--- ，添加至少5条数据
-INSERT INTO t_stu VALUES(0,'学生姓名1','性别','联系方式',10,10,1000.00)
-INSERT INTO t_stu VALUES(0,'学生姓名2','性别','联系方式',20,13,1654.00)
-INSERT INTO t_stu VALUES(0,'学生姓名3','性别','联系方式',30,12,1345.00)
-INSERT INTO t_stu VALUES(0,'学生姓名4','性别','联系方式',40,17,1430.00)
-INSERT INTO t_stu VALUES(0,'学生姓名5','性别','联系方式',50,15,1780.00)
-INSERT INTO t_stu VALUES(0,'学生姓名6','性别','联系方式',60,14,1637.00)
--- 查询所有学生信息，并根据年龄进行降序排序
-SELECT * from t_stu  ORDER BY age DESC
--- 显示姓王的学生的详细信息
-SELECT * from t_stu WHERE INSTR(ename,'王')
--- 查询工资大于5000的所有男同学的信息
-SELECT * from t_stu WHERE sal>5000 and sex = '男'
--- 查询班级编号为20的男同学的电话号码
-SELECT t_stu.tel from t_stu WHERE classid = 20  and sex = '男'
--- 18.查询最低工资。（10分）
-SELECT min(t_stu.sal) from t_stu
--- 查询班级为30的学生的最小年龄
-SELECT min(t_stu.age) from t_stu WHERE classid = 30
--- 查询女生的最低工资
-SELECT min(t_stu.sal) from t_stu WHERE sex = '女'
--- 查询女学生中薪资最低的人的全部信息
-SELECT t_stu.*,min(t_stu.sal) from t_stu WHERE sex = '女'
-
-
-