SELECT * FROM student stu LEFT JOIN sys_user su ON su.id_=stu.user_id_ WHERE stu.user_id_=#{id} SELECT * FROM student WHERE tenant_id_=#{tenantId} INSERT INTO student (user_id_,certificate_photo_,create_time_,update_time_) VALUES(#{userId},#{certificatePhoto},NOW(),NOW()) UPDATE student certificate_photo_ = #{certificatePhoto}, update_time_ = NOW() WHERE user_id_ = #{userId} DELETE FROM student WHERE user_id_ = #{id} AND (stu.user_id_ = #{search} OR su.real_name_ LIKE CONCAT (#{search}, '%')) SELECT * FROM student stu LEFT JOIN sys_user su ON su.id_=stu.user_id_ SELECT COUNT(*) FROM student stu LEFT JOIN sys_user su ON su.id_ = stu.user_id_ SELECT * FROM exam_registration er LEFT JOIN exam_registration_payment erp ON er.id_ = erp.exam_registration_id_ LEFT JOIN student_exam_result ser ON ser.examination_basic_id_ = er.examination_basic_id_ SELECT COUNT(er.id_) FROM exam_registration er LEFT JOIN exam_registration_payment erp ON er.id_ = erp.exam_registration_id_ LEFT JOIN student_exam_result ser ON ser.examination_basic_id_ = er.examination_basic_id_ er.student_id_ = erp.student_id_ AND er.student_id_ = ser.student_id_ AND erp.trans_status_ = 'SUCCESS' AND er.student_id_ = #{studentId} AND er.tenant_id_ = #{tenantId} SELECT s.*,su.* FROM student s LEFT JOIN sys_user su ON s.user_id_ = su.id_ WHERE user_id_ = #{userId}