select distinct   CO.comiket_num,  CO.comike_house,  CO.comike_col,  CD.col_num,  CO.comike_row,  CO.comike_table,  CO.circle_name,  CO.comike_day,  date_format(CO.comike_day,"%m/%d") comike_day_j from   COMIKET_DATA CO  ,COL_DATA     CD where CO.comiket_num=   and CO.comike_day=''   and CD.col_num=   AND CO.comike_col = CD.col_name order by CO.comike_day,CO.comike_house,CO.comike_col,CO.comike_row,CO.comike_table<BR>You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and CO.comike_day=''   and CD.col_num=   AND CO.comike_col = CD.col_name order b' at line 1