已售数量只查询本次团购中的

src/main/resources/mappings/GroupBuyProductMapper.xml

@@ -44,8 +44,10 @@
         FROM
         order_main om
         LEFT JOIN order_sub os ON om.id = os.mainid
+        left join group_order go on om.group_order_id = go.id
         WHERE
         om.group_order_id IS NOT NULL
+        and go.group_buy_id = #{id,jdbcType=BIGINT}
         GROUP BY
         os.productid
         ) ms ON gbp.product_id = ms.productid