day01

.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea
+*.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

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>day01</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+</project>

sql/day01.sql

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+create table t_stu(
+	sid int PRIMARY KEY auto_increment,
+	sname VARCHAR(20),
+	sex VARCHAR(2),
+	tel VARCHAR(13),
+	class_id int ,
+	age int ,
+	sal decimal(10,2)
+);
+
+
+
+INSERT INTO t_stu(sname,sex,tel,class_id,age,sal) VALUES
+('张三','男','12345678901',10,20,1000.00),
+('李四','男','12345678902',10,22,5000.00),
+('王五','女','12345678903',20,23,3120.00),
+('赵柳','男','12345678904',20,23,1353.00),
+('王启','女','12345678905',30,21,15123.00),
+('王浩','男','12345678905',30,22,5123.00),
+('志伟','男','12345678905',30,20,7241.00);
+
+
+SELECT * FROM t_stu ORDER BY age desc;
+
+SELECT * FROM t_stu WHERE sname LIKE '王%';
+
+SELECT * FROM t_stu WHERE sal>5000 and sex='男';
+
+SELECT tel FROM t_stu WHERE class_id=20 and sex = '男';
+
+SELECT MIN(sal) FROM t_stu ;
+
+SELECT MIN(age) FROM t_stu WHERE class_id = 30;
+
+SELECT  MIN(sal) FROM t_stu  WHERE sex='女';
+
+SELECT * FROM t_stu WHERE sid = (SELECT sid FROM
+ t_stu WHERE sex='女'   ORDER BY sal asc LIMIT 1)

src/main/java/com/bwie/Main.java

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+package com.bwie;
+
+public class Main {
+    public static void main(String[] args) {
+        System.out.println("Hello world!");
+    }
+}