Question

我有多个候选人和民意调查的选举结果表。我需要确定哪个被提名者每次投票的票数最多。

以下是表格中的数据样本：

PollID  NomineeID   Votes
1       1           108
1       2           145
1       3           4
2       1           10
2       2           41
2       3           0

我很感激任何人可以提供给我的任何建议或帮助。

Answer 1

这将匹配最高，并且还会带回关系。

select sd.*
from sampleData sd
    inner join (
        select PollID, max(votes) as MaxVotes
        from sampleData
        group by PollID
    ) x on
        sd.PollID = x.PollID and
            sd.Votes = x.MaxVotes

Answer 2

SELECT 
  t.NomineeID,
  t.PollID
FROM 
  ( SELECT
      NomineeID,
      PollID, 
      RANK() OVER (PARTITION BY i.PollID ORDER BY i.Votes DESC) AS Rank
    FROM SampleData i) t
WHERE 
  t.Rank = 1

Answer 3

SELECT PollID, NomineeID, Votes
FROM 
table AS ABB2
    JOIN
       (SELECT PollID, MAX(Votes) AS most_votes
        FROM table) AS ABB1 ON ABB1.PollID = ABB2.PollID AND ABB1.most_votes = ABB2.Votes

请注意，如果您有2名同一个民意调查的票数相同的被提名者，他们都将使用此查询提取

Answer 4

select Pollid, Nomineeid, Votes from Poll_table 
where Votes in ( 
    select max(Votes) from Poll_table 
    group by Pollid
);

哪一行的价值最高？

4 个答案: