【新增】学生管理功能

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/controller/admin/enums/student/ErrorStudentEnums.java

@@ -0,0 +1,14 @@
+package pc.exam.pp.module.exam.controller.admin.enums.student;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public enum ErrorStudentEnums {
+
+    STUDENT_NOT_EXISTS("没有");
+
+    private final String description;
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/controller/admin/student/StudentController.java

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+package pc.exam.pp.module.exam.controller.admin.student;
+
+import org.springframework.web.bind.annotation.*;
+import jakarta.annotation.Resource;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.security.access.prepost.PreAuthorize;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Operation;
+
+import jakarta.validation.*;
+import jakarta.servlet.http.*;
+import java.util.*;
+import java.io.IOException;
+
+import pc.exam.pp.framework.common.pojo.PageParam;
+import pc.exam.pp.framework.common.pojo.PageResult;
+import pc.exam.pp.framework.common.pojo.CommonResult;
+import pc.exam.pp.framework.common.util.object.BeanUtils;
+import static pc.exam.pp.framework.common.pojo.CommonResult.success;
+
+import pc.exam.pp.framework.excel.core.util.ExcelUtils;
+
+import pc.exam.pp.framework.apilog.core.annotation.ApiAccessLog;
+import static pc.exam.pp.framework.apilog.core.enums.OperateTypeEnum.*;
+
+import pc.exam.pp.module.exam.controller.admin.student.vo.*;
+import pc.exam.pp.module.exam.dal.dataobject.student.StudentDO;
+import pc.exam.pp.module.exam.service.student.StudentService;
+
+@Tag(name = "管理后台 - 学生")
+@RestController
+@RequestMapping("/exam/student")
+@Validated
+public class StudentController {
+
+    @Resource
+    private StudentService studentService;
+
+    @PostMapping("/create")
+    @Operation(summary = "创建学生")
+    @PreAuthorize("@ss.hasPermission('exam:student:create')")
+    public CommonResult<Long> createStudent(@Valid @RequestBody StudentSaveReqVO createReqVO) {
+        return success(studentService.createStudent(createReqVO));
+    }
+
+    @PutMapping("/update")
+    @Operation(summary = "更新学生")
+    @PreAuthorize("@ss.hasPermission('exam:student:update')")
+    public CommonResult<Boolean> updateStudent(@Valid @RequestBody StudentSaveReqVO updateReqVO) {
+        studentService.updateStudent(updateReqVO);
+        return success(true);
+    }
+
+    @DeleteMapping("/delete")
+    @Operation(summary = "删除学生")
+    @Parameter(name = "id", description = "编号", required = true)
+    @PreAuthorize("@ss.hasPermission('exam:student:delete')")
+    public CommonResult<Boolean> deleteStudent(@RequestParam("id") Long id) {
+        studentService.deleteStudent(id);
+        return success(true);
+    }
+
+    @GetMapping("/get")
+    @Operation(summary = "获得学生")
+    @Parameter(name = "id", description = "编号", required = true, example = "1024")
+    @PreAuthorize("@ss.hasPermission('exam:student:query')")
+    public CommonResult<StudentRespVO> getStudent(@RequestParam("id") Long id) {
+        StudentDO student = studentService.getStudent(id);
+        return success(BeanUtils.toBean(student, StudentRespVO.class));
+    }
+
+    @GetMapping("/page")
+    @Operation(summary = "获得学生分页")
+    @PreAuthorize("@ss.hasPermission('exam:student:query')")
+    public CommonResult<PageResult<StudentRespVO>> getStudentPage(@Valid StudentPageReqVO pageReqVO) {
+        PageResult<StudentDO> pageResult = studentService.getStudentPage(pageReqVO);
+        return success(BeanUtils.toBean(pageResult, StudentRespVO.class));
+    }
+
+    @GetMapping("/export-excel")
+    @Operation(summary = "导出学生 Excel")
+    @PreAuthorize("@ss.hasPermission('exam:student:export')")
+    @ApiAccessLog(operateType = EXPORT)
+    public void exportStudentExcel(@Valid StudentPageReqVO pageReqVO,
+              HttpServletResponse response) throws IOException {
+        pageReqVO.setPageSize(PageParam.PAGE_SIZE_NONE);
+        List<StudentDO> list = studentService.getStudentPage(pageReqVO).getList();
+        // 导出 Excel
+        ExcelUtils.write(response, "学生.xls", "数据", StudentRespVO.class,
+                        BeanUtils.toBean(list, StudentRespVO.class));
+    }
+
+    @GetMapping("/getStuList")
+    @Operation(summary = "获得没有绑定过班级的学生列表")
+    public CommonResult<List<StudentRespVO>> getStudentPage() {
+        List<StudentDO> pageResult = studentService.getNobindingStudents();
+        return success(BeanUtils.toBean(pageResult, StudentRespVO.class));
+    }
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/controller/admin/student/vo/StudentPageReqVO.java

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+package pc.exam.pp.module.exam.controller.admin.student.vo;
+
+import lombok.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+import pc.exam.pp.framework.common.pojo.PageParam;
+import org.springframework.format.annotation.DateTimeFormat;
+import java.time.LocalDateTime;
+
+import static pc.exam.pp.framework.common.util.date.DateUtils.FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND;
+
+@Schema(description = "管理后台 - 学生分页 Request VO")
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+public class StudentPageReqVO extends PageParam {
+
+    @Schema(description = "名字", example = "李四")
+    private String name;
+
+    @Schema(description = "学号")
+    private String code;
+
+    @Schema(description = "状态", example = "1")
+    private Integer status;
+
+    @Schema(description = "学生用户名", example = "王五")
+    private String userName;
+
+    @Schema(description = "学生密码")
+    private String passWord;
+
+    @Schema(description = "性别")
+    private Integer sex;
+
+    @Schema(description = "电子邮件")
+    private String email;
+
+    @Schema(description = "学生电话")
+    private String phone;
+
+    @Schema(description = "简介", example = "随便")
+    private String description;
+
+    @Schema(description = "头像")
+    private String avatar;
+
+    @Schema(description = "创建时间")
+    @DateTimeFormat(pattern = FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND)
+    private LocalDateTime[] createTime;
+
+    private Long classId;
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/controller/admin/student/vo/StudentRespVO.java

@@ -0,0 +1,66 @@
+package pc.exam.pp.module.exam.controller.admin.student.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.*;
+
+import java.time.LocalDateTime;
+import com.alibaba.excel.annotation.*;
+import pc.exam.pp.framework.excel.core.annotations.DictFormat;
+import pc.exam.pp.framework.excel.core.convert.DictConvert;
+
+@Schema(description = "管理后台 - 学生 Response VO")
+@Data
+@ExcelIgnoreUnannotated
+public class StudentRespVO {
+
+    @Schema(description = "编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "25172")
+    @ExcelProperty("编号")
+    private Long id;
+
+    @Schema(description = "名字", requiredMode = Schema.RequiredMode.REQUIRED, example = "李四")
+    @ExcelProperty("名字")
+    private String name;
+
+    @Schema(description = "学号")
+    @ExcelProperty("学号")
+    private String code;
+
+    @Schema(description = "状态", example = "1")
+    @ExcelProperty(value = "状态", converter = DictConvert.class)
+    @DictFormat("common_status") // TODO 代码优化：建议设置到对应的 DictTypeConstants 枚举类中
+    private Integer status;
+
+    @Schema(description = "学生用户名", example = "王五")
+    @ExcelProperty("学生用户名")
+    private String userName;
+
+    @Schema(description = "学生密码")
+    @ExcelProperty("学生密码")
+    private String passWord;
+
+    @Schema(description = "性别", requiredMode = Schema.RequiredMode.REQUIRED)
+    @ExcelProperty(value = "性别", converter = DictConvert.class)
+    @DictFormat("system_user_sex") // TODO 代码优化：建议设置到对应的 DictTypeConstants 枚举类中
+    private Integer sex;
+
+    @Schema(description = "电子邮件")
+    @ExcelProperty("电子邮件")
+    private String email;
+
+    @Schema(description = "学生电话")
+    @ExcelProperty("学生电话")
+    private String phone;
+
+    @Schema(description = "简介", requiredMode = Schema.RequiredMode.REQUIRED, example = "随便")
+    @ExcelProperty("简介")
+    private String description;
+
+    @Schema(description = "头像")
+    @ExcelProperty("头像")
+    private String avatar;
+
+    @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED)
+    @ExcelProperty("创建时间")
+    private LocalDateTime createTime;
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/controller/admin/student/vo/StudentSaveReqVO.java

@@ -0,0 +1,47 @@
+package pc.exam.pp.module.exam.controller.admin.student.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.*;
+import jakarta.validation.constraints.*;
+
+@Schema(description = "管理后台 - 学生新增/修改 Request VO")
+@Data
+public class StudentSaveReqVO {
+
+    @Schema(description = "编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "25172")
+    private Long id;
+
+    @Schema(description = "名字", requiredMode = Schema.RequiredMode.REQUIRED, example = "李四")
+    @NotEmpty(message = "名字不能为空")
+    private String name;
+
+    @Schema(description = "学号")
+    private String code;
+
+    @Schema(description = "状态", example = "1")
+    private Integer status;
+
+    @Schema(description = "学生用户名", example = "王五")
+    private String userName;
+
+    @Schema(description = "学生密码")
+    private String passWord;
+
+    @Schema(description = "性别", requiredMode = Schema.RequiredMode.REQUIRED)
+    @NotNull(message = "性别不能为空")
+    private Integer sex;
+
+    @Schema(description = "电子邮件")
+    private String email;
+
+    @Schema(description = "学生电话")
+    private String phone;
+
+    @Schema(description = "简介", requiredMode = Schema.RequiredMode.REQUIRED, example = "随便")
+    @NotEmpty(message = "简介不能为空")
+    private String description;
+
+    @Schema(description = "头像")
+    private String avatar;
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/dal/dataobject/student/StudentClassDO.java

@@ -0,0 +1,34 @@
+package pc.exam.pp.module.exam.dal.dataobject.student;
+
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.*;
+import pc.exam.pp.framework.tenant.core.db.TenantBaseDO;
+
+/**
+ * 学生班级 DO
+ *
+ * @author rwb
+ */
+@TableName("exam_student_class")
+@Data
+@ToString(callSuper = true)
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class StudentClassDO extends TenantBaseDO {
+
+    /**
+     * Id
+     */
+    @TableId
+    private Long id;
+    /**
+     * 班级编号
+     */
+    private Long classId;
+    /**
+     * 学生编号
+     */
+    private Long studentId;
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/dal/dataobject/student/StudentDO.java

@@ -0,0 +1,72 @@
+package pc.exam.pp.module.exam.dal.dataobject.student;
+
+import lombok.*;
+import com.baomidou.mybatisplus.annotation.*;
+import pc.exam.pp.framework.mybatis.core.dataobject.BaseDO;
+
+/**
+ * 学生 DO
+ *
+ * @author rwb
+ */
+@TableName("exam_student")
+@KeySequence("exam_student_seq") // 用于 Oracle、PostgreSQL、Kingbase、DB2、H2 数据库的主键自增。如果是 MySQL 等数据库，可不写。
+@Data
+@EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class StudentDO extends BaseDO {
+
+    /**
+     * 编号
+     */
+    @TableId
+    private Long id;
+    /**
+     * 名字
+     */
+    private String name;
+    /**
+     * 学号
+     */
+    private String code;
+    /**
+     * 状态
+     *
+     * 枚举 {@link TODO common_status 对应的类}
+     */
+    private Integer status;
+    /**
+     * 学生用户名
+     */
+    private String userName;
+    /**
+     * 学生密码
+     */
+    private String passWord;
+    /**
+     * 性别
+     *
+     * 枚举 {@link TODO system_user_sex 对应的类}
+     */
+    private Integer sex;
+    /**
+     * 电子邮件
+     */
+    private String email;
+    /**
+     * 学生电话
+     */
+    private String phone;
+    /**
+     * 简介
+     */
+    private String description;
+    /**
+     * 头像
+     */
+    private String avatar;
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/dal/mysql/student/StudentClassMapper.java

@@ -0,0 +1,12 @@
+package pc.exam.pp.module.exam.dal.mysql.student;
+
+
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import pc.exam.pp.framework.mybatis.core.mapper.BaseMapperX;
+import pc.exam.pp.module.exam.controller.admin.classs.vo.ClassStudentSaveReqVO;
+import pc.exam.pp.module.exam.dal.dataobject.student.StudentClassDO;
+
+@Mapper
+public interface StudentClassMapper extends BaseMapperX<StudentClassDO> {
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/dal/mysql/student/StudentMapper.java

@@ -0,0 +1,62 @@
+package pc.exam.pp.module.exam.dal.mysql.student;
+
+import pc.exam.pp.framework.common.pojo.PageResult;
+import pc.exam.pp.framework.mybatis.core.query.LambdaQueryWrapperX;
+import pc.exam.pp.framework.mybatis.core.mapper.BaseMapperX;
+import pc.exam.pp.framework.mybatis.core.query.MPJLambdaWrapperX;
+import pc.exam.pp.module.exam.dal.dataobject.student.StudentClassDO;
+import pc.exam.pp.module.exam.dal.dataobject.student.StudentDO;
+import org.apache.ibatis.annotations.Mapper;
+import pc.exam.pp.module.exam.controller.admin.student.vo.*;
+
+import java.util.List;
+
+/**
+ * 学生 Mapper
+ *
+ * @author rwb
+ */
+@Mapper
+public interface StudentMapper extends BaseMapperX<StudentDO> {
+
+//    default PageResult<StudentDO> selectPage(StudentPageReqVO reqVO) {
+//        return selectPage(reqVO, new LambdaQueryWrapperX<StudentDO>()
+//                .likeIfPresent(StudentDO::getName, reqVO.getName())
+//                .eqIfPresent(StudentDO::getCode, reqVO.getCode())
+//                .eqIfPresent(StudentDO::getStatus, reqVO.getStatus())
+//                .likeIfPresent(StudentDO::getUserName, reqVO.getUserName())
+//                .eqIfPresent(StudentDO::getPassWord, reqVO.getPassWord())
+//                .eqIfPresent(StudentDO::getSex, reqVO.getSex())
+//                .eqIfPresent(StudentDO::getEmail, reqVO.getEmail())
+//                .eqIfPresent(StudentDO::getPhone, reqVO.getPhone())
+//                .eqIfPresent(StudentDO::getDescription, reqVO.getDescription())
+//                .eqIfPresent(StudentDO::getAvatar, reqVO.getAvatar())
+//                .betweenIfPresent(StudentDO::getCreateTime, reqVO.getCreateTime())
+//                .orderByDesc(StudentDO::getId));
+//    }
+
+    default PageResult<StudentDO> selectPage(StudentPageReqVO reqVO) {
+        MPJLambdaWrapperX<StudentDO> query = new MPJLambdaWrapperX<StudentDO>()
+                .likeIfPresent(StudentDO::getName, reqVO.getName())
+                .eqIfPresent(StudentDO::getCode, reqVO.getCode())
+                .eqIfPresent(StudentDO::getStatus, reqVO.getStatus())
+                .likeIfPresent(StudentDO::getUserName, reqVO.getUserName())
+                .eqIfPresent(StudentDO::getPassWord, reqVO.getPassWord())
+                .eqIfPresent(StudentDO::getSex, reqVO.getSex())
+                .eqIfPresent(StudentDO::getEmail, reqVO.getEmail())
+                .eqIfPresent(StudentDO::getPhone, reqVO.getPhone())
+                .eqIfPresent(StudentDO::getDescription, reqVO.getDescription())
+                .eqIfPresent(StudentDO::getAvatar, reqVO.getAvatar())
+                .betweenIfPresent(StudentDO::getCreateTime, reqVO.getCreateTime())
+                .orderByDesc(StudentDO::getId);
+        if (reqVO.getClassId() != null) {
+            query.leftJoin(StudentClassDO.class, StudentClassDO::getStudentId, StudentDO::getId)
+                    .eq(reqVO.getClassId() != null, StudentClassDO::getClassId, reqVO.getClassId()); // 避免 1 对多查询，产生相同的 1
+        }
+        return selectJoinPage(reqVO, StudentDO.class, query);
+    }
+
+
+    List<StudentDO> getBindingStudents();
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/service/student/StudentService.java

@@ -0,0 +1,69 @@
+package pc.exam.pp.module.exam.service.student;
+
+import jakarta.validation.*;
+import pc.exam.pp.module.exam.controller.admin.student.vo.*;
+import pc.exam.pp.module.exam.dal.dataobject.student.StudentDO;
+import pc.exam.pp.framework.common.pojo.PageResult;
+
+import java.util.List;
+
+/**
+ * 学生 Service 接口
+ *
+ * @author rwb
+ */
+public interface StudentService {
+
+    /**
+     * 创建学生
+     *
+     * @param createReqVO 创建信息
+     * @return 编号
+     */
+    Long createStudent(@Valid StudentSaveReqVO createReqVO);
+
+    /**
+     * 更新学生
+     *
+     * @param updateReqVO 更新信息
+     */
+    void updateStudent(@Valid StudentSaveReqVO updateReqVO);
+
+    /**
+     * 删除学生
+     *
+     * @param id 编号
+     */
+    void deleteStudent(Long id);
+
+    /**
+     * 根据班级ID查询学生列表（分页）
+     *
+     * @param id 编号
+     */
+//    PageResult<StudentDO> getStudentListByClassId(Long id);
+
+    /**
+     * 获得学生
+     *
+     * @param id 编号
+     * @return 学生
+     */
+    StudentDO getStudent(Long id);
+
+    /**
+     * 获得学生分页
+     *
+     * @param pageReqVO 分页查询
+     * @return 学生分页
+     */
+    PageResult<StudentDO> getStudentPage(StudentPageReqVO pageReqVO);
+
+    /**
+     * 获得学生没有绑定班级的学生列表
+     *
+     * @return 学生列表
+     */
+    List<StudentDO> getNobindingStudents();
+
+}

exam-module-exam/exam-module-exam-biz/src/main/java/pc/exam/pp/module/exam/service/student/StudentServiceImpl.java

@@ -0,0 +1,78 @@
+package pc.exam.pp.module.exam.service.student;
+
+import org.springframework.stereotype.Service;
+import jakarta.annotation.Resource;
+import org.springframework.validation.annotation.Validated;
+
+import pc.exam.pp.module.exam.controller.admin.student.vo.*;
+import pc.exam.pp.module.exam.dal.dataobject.student.StudentDO;
+import pc.exam.pp.framework.common.pojo.PageResult;
+import pc.exam.pp.framework.common.util.object.BeanUtils;
+
+import pc.exam.pp.module.exam.dal.mysql.student.StudentMapper;
+
+import java.util.List;
+
+import static pc.exam.pp.framework.common.exception.util.ServiceExceptionUtil.exception;
+import static pc.exam.pp.module.system.enums.ErrorCodeConstants.STUDENT_NOT_EXISTS;
+
+/**
+ * 学生 Service 实现类
+ *
+ * @author rwb
+ */
+@Service
+@Validated
+public class StudentServiceImpl implements StudentService {
+
+    @Resource
+    private StudentMapper studentMapper;
+
+    @Override
+    public Long createStudent(StudentSaveReqVO createReqVO) {
+        // 插入
+        StudentDO student = BeanUtils.toBean(createReqVO, StudentDO.class);
+        studentMapper.insert(student);
+        // 返回
+        return student.getId();
+    }
+
+    @Override
+    public void updateStudent(StudentSaveReqVO updateReqVO) {
+        // 校验存在
+        validateStudentExists(updateReqVO.getId());
+        // 更新
+        StudentDO updateObj = BeanUtils.toBean(updateReqVO, StudentDO.class);
+        studentMapper.updateById(updateObj);
+    }
+
+    @Override
+    public void deleteStudent(Long id) {
+        // 校验存在
+        validateStudentExists(id);
+        // 删除
+        studentMapper.deleteById(id);
+    }
+
+    private void validateStudentExists(Long id) {
+        if (studentMapper.selectById(id) == null) {
+            throw exception(STUDENT_NOT_EXISTS);
+        }
+    }
+
+    @Override
+    public StudentDO getStudent(Long id) {
+        return studentMapper.selectById(id);
+    }
+
+    @Override
+    public PageResult<StudentDO> getStudentPage(StudentPageReqVO pageReqVO) {
+        return studentMapper.selectPage(pageReqVO);
+    }
+
+    @Override
+    public List<StudentDO> getNobindingStudents() {
+        return studentMapper.getBindingStudents();
+    }
+
+}

exam-module-exam/exam-module-exam-biz/src/main/resources/mapper/student/StudentClassMapper.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="pc.exam.pp.module.exam.dal.mysql.student.StudentClassMapper">
+
+    <!--
+        一般情况下，尽可能使用 Mapper 进行 CRUD 增删改查即可。
+        无法满足的场景，例如说多表关联查询，才使用 XML 编写 SQL。
+        代码生成器暂时只生成 Mapper XML 文件本身，更多推荐 MybatisX 快速开发插件来生成查询。
+        文档可见：https://www.iocoder.cn/MyBatis/x-plugins/
+     -->
+
+</mapper>

exam-module-exam/exam-module-exam-biz/src/main/resources/mapper/student/StudentMapper.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="pc.exam.pp.module.exam.dal.mysql.student.StudentMapper">
+
+    <!--
+        一般情况下，尽可能使用 Mapper 进行 CRUD 增删改查即可。
+        无法满足的场景，例如说多表关联查询，才使用 XML 编写 SQL。
+        代码生成器暂时只生成 Mapper XML 文件本身，更多推荐 MybatisX 快速开发插件来生成查询。
+        文档可见：https://www.iocoder.cn/MyBatis/x-plugins/
+     -->
+    <select id="getBindingStudents" resultType="pc.exam.pp.module.exam.dal.dataobject.student.StudentDO">
+        SELECT *
+        FROM exam_student
+        WHERE id NOT IN (
+            SELECT student_id FROM exam_student_class
+        )
+          AND deleted = 0;
+    </select>
+
+</mapper>