最后我想到oracle里面的关键字union，这个关键字是用来查询并集的，所以我就用了union来把两个表里面数据查询出来，sql如下：
"select A.*\n" + " from (\n" + " select A.SECKILL_ID ID,\n" + " A.COMMODITY_ID,\n" + " A.COMMODITY_NAME,\n" + " A.SELL_PRICE,\n" + " A.BUY_USER_CNT,\n" + " A.PRICE,\n" + " A.isTimeEnd,\n" + " A.COUNT,\n" + " A.BRAND_ID,\n" + " 1 TYPE,\n" + " discount,\n" + " A.BEGIN_TIME,\n" + " A.CONTENT CONTENT,\n" + " TO_CHAR(discount * 10, '0.99') show_discount\n" + " from (select s.*,\n" + " sc.BRAND_ID,\n" + " sc.COMMODITY_NAME,\n" + " case\n" + " when begin_time < sysdate and end_time > sysdate then\n" + " 0\n" + " else\n" + " 1\n" + " end isTimeEnd,\n" + " sc.sell_price,\n" + " nvl(cnt, 0) + nvl(back_count, 0) BUY_USER_CNT,\n" + " s.price / sc.sell_price discount\n" + " from seckill s\n" + " join (select CSC.SORT_ID,\n" + " C.COMMODITY_ID,\n" + " C.COMMODITY_NAME,\n" + " SC.SELL_PRICE,\n" + " SC.SHOP_COMMODITY_ID,\n" + " C.BRAND_ID\n" + " from COMMODITY C\n" + " join SHOP_COMMODITY SC on C.COMMODITY_ID =\n" + " SC.COMMODITY_ID\n" + " join COMMODITY_SORT_CONTACT CSC on CSC.COMMODITY_ID =\n" + " C.COMMODITY_ID\n" + " join (SELECT *\n" + " FROM sort\n" + " START WITH SORT_ID = 1\n" + " connect by P_ID = prior SORT_ID\n" + " and STATE = 1) s on S.SORT_ID =\n" + " CSC.SORT_ID\n" + " join COMMODITY_BRAND CB on C.BRAND_ID = CB.BRAND_ID\n" + " where S.STATE = 1\n" + " and SC.STATE = 1\n" + " and sc.SELL_PRICE > 0\n" + " and C.STATE = 1\n" + " and C.IS_SHOW = 1\n" + " and CB.STATE = 1\n" + " and SC.SALE_ENABLE_COUNT > 0\n" + " and SC.SELL_PRICE > 0\n" + " and (c.IS_SCORE is null or c.IS_SCORE != 1)) sc on sc.commodity_id =\n" + " s.commodity_id\n" + " left join (select count(seckill_id) cnt, seckill_id\n" + " from seckill_order\n" + " group by seckill_id) o on o.seckill_id =\n" + " s.seckill_id\n" + " where s.state = 1) A\n" + " union \n" + " select A.GROUP_BUYING_ID ID,\n" + " A.COMMODITY_ID,\n" + " A.COMMODITY_NAME,\n" + " A.SELL_PRICE,\n" + " A.BUY_USER_CNT,\n" + " A.PRICE,\n" + " A.isTimeEnd,\n" + " A.BRAND_ID,\n" + " A.COUNT,\n" + " 2 TYPE,\n" + " discount,\n" + " A.BEGIN_TIME,\n" + " A.GROUP_BUYING_TEXT CONTENT,\n" + " TO_CHAR(discount * 10, '0.99') show_discount\n" + " from (select group_buying_text CONTENT,\n" + " group_buying_price price,\n" + " s.*,\n" + " sc.BRAND_ID,\n" + " sc.COMMODITY_NAME,\n" + " case\n" + " when begin_time < sysdate and end_time > sysdate then\n" + " 0\n" + " else\n" + " 1\n" + " end isTimeEnd,\n" + " sc.sell_price,\n" + " nvl(cnt, 0) + nvl(back_count, 0) BUY_USER_CNT,\n" + " s.group_buying_price / sc.sell_price discount\n" + " from group_buying s\n" + " join (select CSC.SORT_ID,\n" + " C.COMMODITY_ID,\n" + " C.COMMODITY_NAME,\n" + " SC.SELL_PRICE,\n" + " SC.SHOP_COMMODITY_ID,\n" + " C.BRAND_ID\n" + " from COMMODITY C\n" + " join SHOP_COMMODITY SC on C.COMMODITY_ID =\n" + " SC.COMMODITY_ID\n" + " join COMMODITY_SORT_CONTACT CSC on CSC.COMMODITY_ID =\n" + " C.COMMODITY_ID\n" + " join (SELECT *\n" + " FROM sort\n" + " START WITH SORT_ID = 1\n" + " connect by P_ID = prior SORT_ID\n" + " and STATE = 1) s on S.SORT_ID =\n" + " CSC.SORT_ID\n" + " join COMMODITY_BRAND CB on C.BRAND_ID = CB.BRAND_ID\n" + " where S.STATE = 1\n" + " and SC.STATE = 1\n" + " and sc.SELL_PRICE > 0\n" + " and C.STATE = 1\n" + " and C.IS_SHOW = 1\n" + " and CB.STATE = 1\n" + " and SC.SALE_ENABLE_COUNT > 0\n" + " and SC.SELL_PRICE > 0\n" + " and (c.IS_SCORE is null or c.IS_SCORE != 1)) sc on sc.commodity_id =\n" + " s.commodity_id\n" + " left join (select count(group_buying_id) cnt,\n" + " group_buying_id\n" + " from (select MEMBER_ID, group_buying_id\n" + " from GROUP_BUYING_MEMBER\n" + " where state != 2\n" + " group by group_buying_id, member_id)\n" + " group by group_buying_id) o on o.group_buying_id =\n" + " s.group_buying_id\n" + " where s.state = 1) A) A\n" + " order by BEGIN_TIME desc, type asc, ID DESC\n" + "\n" + "";,但是我在执行之后老是报orc-000932异常，数据类型不一致。于是我就想是不是我要查询的字段是不是有类型问题，我一个个的对比发现没有问题。然后我在网上找了一下问题，原来是union关键字会会对结果集里面的商品数据进行帅选，把union换成union all就可以解决这个问题了.