SELECT * FROM exam_room_student_relation WHERE id_ = #{id} SELECT * FROM exam_room_student_relation ORDER BY id_ INSERT INTO exam_room_student_relation (id_,examination_basic_id_,exam_room_id_,student_id_,create_time_,update_time_,tenant_id_) VALUES(#{id},#{examinationBasicId},#{examRoomId},#{studentId},NOW(),NOW(),#{tenantId}) INSERT INTO exam_room_student_relation (examination_basic_id_,exam_room_id_,student_id_,create_time_,update_time_,tenant_id_) VALUES (#{roomStudent.examinationBasicId},#{roomStudent.examRoomId},#{roomStudent.studentId},NOW(),NOW(),#{roomStudent.tenantId}) UPDATE exam_room_student_relation examination_basic_id_ = #{examinationBasicId}, classroom_switch_ = #{classroomSwitch,typeHandler=com.keao.edu.common.dal.CustomEnumTypeHandler}, id_ = #{id}, tenant_id_ = #{tenantId}, exam_room_id_ = #{examRoomId}, student_id_ = #{studentId}, update_time_ = NOW() WHERE id_ = #{id} DELETE FROM exam_room_student_relation WHERE id_ = #{id} DELETE FROM exam_room_student_relation WHERE exam_room_id_=#{examRoomId} AND student_id_ IN #{studentId} DELETE FROM exam_room_student_relation WHERE exam_room_id_ IN #{examRoomId} SELECT * FROM exam_room_student_relation ORDER BY id_ SELECT COUNT(*) FROM exam_room_student_relation AND er.examination_basic_id_ = 1 AND ersr.id_ IS NULL AND ersr.exam_room_id_ =1 SELECT ersr.id_, ersr.student_id_, er.subject_id_ regist_subject_id_, er.level_ regist_level_, er.create_time_ regist_create_time_ FROM exam_registration er LEFT JOIN exam_room_student_relation ersr ON ersr.student_id_ = er.student_id_ ON ersr.examination_basic_id_=er.examination_basic_id_ ORDER BY id_ SELECT ersr.id_, ersr.student_id_, er.subject_id_, er.level_, er.create_time_ FROM exam_registration er LEFT JOIN exam_room_student_relation ersr ON ersr.student_id_ = er.student_id_ SELECT id_, examination_basic_id_, exam_room_id_, student_id_ FROM exam_room_student_relation WHERE exam_room_id_=#{examRoomId}