select a.id, a.company_id, a.student_id, a.plan_name, a.course_name,a.level,a.period,a.actual_period,a.score, a.company_id,a.passed, a.create_by, a.create_time, a.update_by, a.update_time, a.remark,b.name as company_name, c.name as student_name,c.id_no as student_idno,c.phone as student_phone from ex_exam_record a left join sys_company b on b.id=a.company_id left join ex_student c on c.id=a.student_id