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我有這樣的代碼,並單獨他們所有的工作,所以我想它一定是被放錯了位置的語法:兩個子查詢添加到除複雜的MySQL查詢返回任何記錄
SELECT i.*, o.organ_name, o.organ_logo, vtable.*, cc.ccount
FROM heroku_056eb661631f253.op_ideas i
JOIN
上面收集的所有記錄來自op_ideas表。
(SELECT v.idea_Id,
COUNT(v.agree = 1 or null) as agree,
COUNT(v.disagree = 1 or null) as disagree,
COUNT(v.obstain = 1 or null) as abstain
FROM op_idea_vote v
GROUP BY v.idea_id
) AS vtable ON vtable.idea_id = i.idea_id
上面然後搜索另一個表並計數每個記錄的投票並將其添加到該行。
JOIN
(SELECT ccc.idea_id AS cid, COUNT(ccc.idea_id = 1 or null) AS ccount
FROM op_comments ccc
GROUP BY idea_id
) AS cc ON cid = i.idea_id
以上計算了將多少條評論附加到idea_id並將其添加到主行。
LEFT JOIN op_organs o ON i.post_type = o.organs_id
上述連接另一臺現有的行,這樣可能會或可能不會是空白
WHERE idea_geo = 'International';
國際上面被替換爲一個變量,它可以等於:本地,地區,國家或國際。
問題:查詢觸發但返回空,但是如果單獨放置,它們將工作。有人可以請我指出正確的方向。
以下是完整的代碼,以幫助閱讀:
Here is another issue, I think I have placed the code in the wrong place. Wanting to add another sub SELECT to count how many comments are per idea:
SELECT i.*, o.organ_name, o.organ_logo, vtable.*, cc.ccount
FROM heroku_056eb661631f253.op_ideas i
JOIN
(SELECT v.idea_Id,
COUNT(v.agree = 1 or null) as agree,
COUNT(v.disagree = 1 or null) as disagree,
COUNT(v.obstain = 1 or null) as abstain
FROM op_idea_vote v
GROUP BY v.idea_id
) AS vtable ON vtable.idea_id = i.idea_id
JOIN
(SELECT ccc.idea_id AS cid, COUNT(ccc.idea_id = 1 or null) AS ccount
FROM op_comments ccc
GROUP BY idea_id
) AS cc ON cid = i.idea_id
LEFT JOIN op_organs o ON i.post_type = o.organs_id
WHERE idea_geo = 'International';
在此先感謝。
編輯新的解決方案
感謝WayneC和Conrad我們有充分的工作查詢。
下面是代碼:
SELECT i.*, o.organ_name, o.organ_logo, vtable.*
FROM heroku_056eb661631f253.op_ideas i
LEFT JOIN
(SELECT v.idea_Id, cc.*,
COUNT(v.agree = 1 or null) as agree,
COUNT(v.disagree = 1 or null) as disagree,
COUNT(v.obstain = 1 or null) as abstain
FROM op_idea_vote v
LEFT JOIN
(SELECT idea_id AS id,COUNT(*) AS ccount
FROM op_comments cco
GROUP BY cco.idea_id
) AS cc ON cc.id = v.idea_id
GROUP BY v.idea_id
) AS vtable ON vtable.idea_id = i.idea_id
LEFT JOIN op_organs o ON i.post_type = o.organs_id
WHERE idea_geo = 'International';
哪個表是idea_geo嗎?如果它在op_organs中,那麼您需要將您的位置更改爲'idea_geo ='International'或idea_geo IS NULL' –
@ConradFrix Hiya。它在表op_ideas i' –
嗯你確定有兩個子查詢中的Idea_id的任何值 –