對滿足兩個單獨標準的人員的查詢

我需要找到一種方法來計算居住在同一家中並且投票了「DEMO」，「REP」或「DEMO-REP」的選民人數。我已經得到這個目前爲止，http://sqlfiddle.com/#!3/469d4/3 對滿足兩個單獨標準的人員的查詢

例如，英里和Raquel住在同一個房子，並且都投了'REP'，他們將被計入'REP'列。克里斯和塔尼亞都住在同一棟房子裏，並投了'REP'和'DEMO'，所以他們將進入'DEMO-REP'專欄。小提琴結果需要。

1 http://img824.imageshack.us/img824/3305/resultbx.png

在此先感謝

來源

2012-07-23 user973671

不知道我理解。看起來你有來自7個不同家庭的11票，但只佔4個。你是否不想只返回一次投票結果？ – 2012-07-23 16:19:22

是的，在真正的查詢中，我想要返回只投一次的家庭的結果，我只是將這部分留給了這個問題。謝謝 – user973671 2012-07-23 16:36:41

我想這你想要做什麼：

select sum(votes) as total, sum(demo*(1-rep)) as demoonly, 
     sum(rep*(1-demo)) as reponly, sum(demo*rep) as demorep 
from (select address, cont(*) as votes, 
      max(case when voted = 'DEMO' then 1 else 0 end) as demo, 
      max(case when voted = 'REP' then 1 else 0 end) as rep 
     from t 
     group by address 
    ) t

假設你想戶（地址）與一個以上的人：

select sum(votes) as total, sum(demo*(1-rep)) as demoonly, 
     sum(rep*(1-demo)) as reponly, sum(demo*rep) as demorep 
from (select address, count(*) as votes, 
      max(case when voted = 'DEMO' then 1 else 0 end) as demo, 
      max(case when voted = 'REP' then 1 else 0 end) as rep 
     from test4 
     group by address 
     having count(distinct name) > 1 
    ) t

在這裏，我假設「地址」是家庭的代理人，因爲數據中沒有家庭字段。

來源

2012-07-23 16:20:59

我不認爲這會給出正確的結果，我讓它在小提琴上工作，http://sqlfiddle.com/#!3/469d4/23。謝謝 – user973671 2012-07-23 16:42:51

您是否修復了查詢？我想你在我回答後澄清了這個問題。 – 2012-07-23 17:23:12

不，它仍然是不固定的，謝謝 – user973671 2012-07-23 21:49:08

編輯：這適用於您的SQL小提琴代碼。

我會這樣：

SELECT COUNT(Voted) AS TOTAL, 
(
SELECT COUNT(DISTINCT address) FROM test4 
WHERE address NOT IN (SELECT address FROM test4 WHERE Voted = 'REP') 
) AS Demo, 
(SELECT COUNT(DISTINCT address) FROM test4 
WHERE address NOT IN (SELECT address FROM test4 WHERE Voted = 'DEMO') 
) AS Rep, 
(SELECT COUNT(DISTINCT address) FROM test4 
WHERE address IN (SELECT address FROM test4 WHERE Voted = 'REP') AND address IN (SELECT address FROM test4 WHERE Voted = 'DEMO') 
) AS DemoRep 
    FROM test4

來源

2012-07-23 16:38:30 ristonj

不幸的是，表中沒有HouseholdID，謝謝 – user973671 2012-07-23 16:54:30

如果您將「Address」替換爲「HouseholdID」，它應該也能正常工作。 – ristonj 2012-07-23 19:52:18

對不起，我覺得有些困惑，如果地址匹配，那麼家庭應該被視爲一個家庭，唯一的家庭應該出現在結果中。謝謝 – user973671 2012-07-23 22:03:09

對滿足兩個單獨標準的人員的查詢

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