commit 7044a4dc95f30a6bd60293d9cfd2afca6de6fb36
Author: bai <173792339@qq.com>
Date:   Thu Jul 18 21:09:31 2024 +0800

    brs-day1

diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
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diff --git a/.idea/.gitignore b/.idea/.gitignore
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+++ b/.idea/.gitignore
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+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
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--- /dev/null
+++ b/.idea/encodings.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>
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diff --git a/.idea/misc.xml b/.idea/misc.xml
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+++ b/.idea/misc.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
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--- /dev/null
+++ b/pom.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.bwie</groupId>
+    <artifactId>untitled</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+</project>
diff --git a/src/sql/ria_01.sql b/src/sql/ria_01.sql
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index 0000000..40eb3e1
--- /dev/null
+++ b/src/sql/ria_01.sql
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+-- 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'
+
+
+
diff --git a/src/理论/img.png b/src/理论/img.png
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