SELECT PRE_OPERATE_DATE FROM fj_con_electricalprojec_b WHERE PRE_OPERATE_DATE BETWEEN DATE_SUB(NOW(), INTERVAL - 30 DAY);
语句报错是怎么回事? [Err] 1064 - 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 '' at line 6
求解其他查询方法~