create table `student_score`
(
    id           bigint auto_increment comment '主鍵ID' primary key,
    student_id   bigint            not null comment '學(xué)號(hào)',
    gender_man   tinyint default 0 not null comment '性別, 0:女; 1:男',
    school_term  int               null comment '學(xué)期',
    subject      varchar(30)       null comment '學(xué)科',
    score        int               null comment '成績(jī)',
    gmt_create   datetime          not null comment '記錄創(chuàng)建時(shí)間',
    gmt_modified datetime          not null comment '記錄最后修改時(shí)間',
    is_deleted   tinyint default 0 not null comment '邏輯刪除標(biāo)識(shí)'
) engine = InnoDB default charset=utf8;

select school_term,
       subject,
       count(score) as count,
       min(score)   as min_score,
       max(score)   as max_score,
       avg(score)   as max_score
from student_score
where school_term >= 2000
  and subject in ('英語(yǔ)', '數(shù)學(xué)', '語(yǔ)文')
  and score >= 60
  and is_deleted = 0
group by school_term, subject
having count(score) > 1
order by school_term, subject;

public interface MyStudentScoreMapper {
    List<Map<String, Object>> summaryScore(SummaryQuery paras);
}

@Data
@Accessors(chain = true)
public class SummaryQuery {
    private Integer schoolTerm;

    private List<String> subjects;

    private Integer score;

    private Integer minCount;
}

<select id="summaryScore" resultType="map" parameterType="cn.org.fluent.mybatis.springboot.demo.mapper.SummaryQuery">
    select school_term,
    subject,
    count(score) as count,
    min(score) as min_score,
    max(score) as max_score,
    avg(score) as max_score
    from student_score
    where school_term >= #{schoolTerm}
    and subject in
    <foreach collection="subjects" item="item" open="(" close=")" separator=",">
        #{item}
    </foreach>
    and score >= #{score}
    and is_deleted = 0
    group by school_term, subject
    having count(score) > #{minCount}
    order by school_term, subject
</select>

@RunWith(SpringRunner.class)
@SpringBootTest(classes = QuickStartApplication.class)
public class MybatisDemo {
    @Autowired
    private MyStudentScoreMapper mapper;

    @Test
    public void mybatis_demo() {
        // 構(gòu)造查詢(xún)參數(shù)
        SummaryQuery paras = new SummaryQuery()
            .setSchoolTerm(2000)
            .setSubjects(Arrays.asList("英語(yǔ)", "數(shù)學(xué)", "語(yǔ)文"))
            .setScore(60)
            .setMinCount(1);

        List<Map<String, Object>> summary = mapper.summaryScore(paras);
        System.out.println(summary);
    }
}

public class AppEntityGenerator {
    static final String url = "jdbc:mysql://localhost:3306/fluent_mybatis_demo?useSSL=false&useUnicode=true&characterEncoding=utf-8";

    public static void main(String[] args) {
        FileGenerator.build(Abc.class);
    }

    @Tables(
        /** 數(shù)據(jù)庫(kù)連接信息 **/
        url = url, username = "root", password = "password",
        /** Entity類(lèi)parent package路徑 **/
        basePack = "cn.org.fluent.mybatis.springboot.demo",
        /** Entity代碼源目錄 **/
        srcDir = "spring-boot-demo/src/main/java",
        /** Dao代碼源目錄 **/
        daoDir = "spring-boot-demo/src/main/java",
        /** 如果表定義記錄創(chuàng)建，記錄修改，邏輯刪除字段 **/
        gmtCreated = "gmt_create", gmtModified = "gmt_modified", logicDeleted = "is_deleted",
        /** 需要生成文件的表 ( 表名稱(chēng):對(duì)應(yīng)的Entity名稱(chēng) ) **/
        tables = @Table(value = {"student_score"})
    )
    static class Abc {
    }
}

public class CodeGenerator {

    static String dbUrl = "jdbc:mysql://localhost:3306/fluent_mybatis_demo?useSSL=false&useUnicode=true&characterEncoding=utf-8";

    @Test
    public void generateCode() {
        GlobalConfig config = new GlobalConfig();
        DataSourceConfig dataSourceConfig = new DataSourceConfig();
        dataSourceConfig.setDbType(DbType.MYSQL)
            .setUrl(dbUrl)
            .setUsername("root")
            .setPassword("password")
            .setDriverName(Driver.class.getName());
        StrategyConfig strategyConfig = new StrategyConfig();
        strategyConfig
            .setCapitalMode(true)
            .setEntityLombokModel(false)
            .setNaming(NamingStrategy.underline_to_camel)
            .setColumnNaming(NamingStrategy.underline_to_camel)
            .setEntityTableFieldAnnotationEnable(true)
            .setFieldPrefix(new String[]{"test_"})
            .setInclude(new String[]{"student_score"})
            .setLogicDeleteFieldName("is_deleted")
            .setTableFillList(Arrays.asList(
                new TableFill("gmt_create", FieldFill.INSERT),
                new TableFill("gmt_modified", FieldFill.INSERT_UPDATE)));

        config
            .setActiveRecord(false)
            .setIdType(IdType.AUTO)
            .setOutputDir(System.getProperty("user.dir") + "/src/main/java/")
            .setFileOverride(true);

        new AutoGenerator().setGlobalConfig(config)
            .setDataSource(dataSourceConfig)
            .setStrategy(strategyConfig)
            .setPackageInfo(
                new PackageConfig()
                    .setParent("com.mp.demo")
                    .setController("controller")
                    .setEntity("entity")
            ).execute();
    }
}