mysql group_concat加入

Question

我有一個查詢，看起來像這樣：

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 

該查詢拋出錯誤

常規錯誤：1111無效使用組功能

我在這里想念什么？ 謝謝

Answer 1

您要完整地選擇原始記錄，然后在web_order_item上進行組連接，由於DISTINCT屬性，這將產生一行，如果有多個記錄，則將其分組，然后試圖再次分組...到底要做什么分組？ 沒有聚合，只要按一個順序就足夠了。 刪除分組依據...或更改分組依據以在合並之前包含所有相關項...

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 

希望這會有所幫助

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