ERROR

데이터베이스 에러가 발생하였습니다.

Problem preparing query Unknown column 'pt.poll_start_date' in 'field list'
SELECT p.*, pt.pidx, pt.tidx, pt.confirm_type, pt.poll, pt.is_poll_closed, pt.start_date, pt.end_date, pt.signin_start_date, pt.signin_end_date, pt.point, pt.mcidx1, pt.mcidx2, pt.signin_limit, pt.awaiter_limit, pt.poll_start_date, pt.applicant, pt.participant, pt.compilator, pt.respondent, pt.is_complete, pt.duplicate_enable, pt.extra, pt.calender_data, t.title as topic FROM im_workshop_program_topic_table pt LEFT JOIN im_workshop_program_table p on p.idx=pt.pidx LEFT JOIN im_workshop_topic_table t on t.idx=pt.tidx WHERE pt.pidx = ? AND pt.tidx = ?