Question

我有一个如下所示的查询：

SELECT 
    *, 
    GROUP_CONCAT(DISTINCT web_order_item.od_pcode) AS items, 
    GROUP_CONCAT(DISTINCT woi_id) AS woi_ids 
    FROM web_order 
JOIN web_order_item USING(od_id) 
JOIN customer_master ON customer_master.VC_CUSTOMER_CODE = web_order.p_vendor 
LEFT JOIN production_item ON production_item.ItemID IN (GROUP_CONCAT(DISTINCT woi_id)) AND QCStatus <> 'received' 
WHERE
   web_order.od_date >= FROM_UNIXTIME(1357257600) 
   AND web_order.od_date <= FROM_UNIXTIME(1359936000) 
   AND web_order.od_id > 0 
   AND 1 
GROUP BY web_order.od_id 
ORDER BY web_order.od_id DESC

此查询引发错误

常规错误：1111无效使用群组功能

我在这里缺少什么？感谢

Answer 1

您完整地选择了原始记录，然后您在web_order_item上进行了一个组连接，由于DISTINCT属性，如果有多个属性，这将产生一行记录，你在那里进行分组，然后再尝试分组......你到底分组了什么？没有聚合，订单就足够了。通过...取出小组或更改小组以在小组结束前包括所有相关项目...

Answer 2

SELECT 
*, 
GROUP_CONCAT(DISTINCT web_order_item.od_pcode) AS items, 
GROUP_CONCAT(DISTINCT woi_id) AS woi_ids 
FROM web_order 
JOIN web_order_item USING(od_id) 
JOIN customer_master ON customer_master.VC_CUSTOMER_CODE = web_order.p_vendor 
LEFT JOIN production_item ON production_item.ItemID IN (GROUP_CONCAT(DISTINCT woi_id))     AND QCStatus <> 'received' 
WHERE
web_order.od_date >= FROM_UNIXTIME(1357257600) 
AND web_order.od_date <= FROM_UNIXTIME(1359936000) 
AND web_order.od_id > 0 
AND 1 
GROUP BY items, woi_ids 
ORDER BY web_order.od_id DESC

跳这个帮助

参考http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html

连接中的mysql group_concat

2 个答案: