Time : 04:16:14 SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'reg_date' in where clause is ambiguous Raw SQL : SELECT A.no, A.title, A.before_content, A.after_content, A.reg_date, B.attach AS attach1, B.attach_ori AS attach_ori1, B.mod_date AS mod_date1, C.attach AS attach2, C.attach_ori AS attach_ori2, C.mod_date AS mod_date2 FROM 2015_photo A LEFT JOIN 2015_attach B ON A.no = B.wno AND B.code = :Bcode AND B.seq = :Bseq LEFT JOIN 2015_attach C ON A.no = C.wno AND C.code = :Ccode AND C.seq = :Cseq WHERE A.no > :no AND A.d_show = :show AND A.del = :del AND reg_date < now() ORDER BY A.reg_date DESC, A.no DESC LIMIT :startNum, :rowCount