在MySQL中计票

Question

我有一张表，其中包含以下列： id name vote

每个名称都是唯一的，每个投票都是null或包含名称。

我需要一个MySQL声明来返回每个人有多少票，以及谁投票给每个人。

我已经做了3个小时的工作，而且我完全失去了，所以老实说，我并不关心它是多么低效，或者你是如何做到的。

Answer 1

SELECT name, count(*) as num_votes, GROUP_CONCAT(vote) as voted_by FROM table GROUP BY 1

Answer 2

多少票：

select 
 count(*) as numVotes, 
 vote
from
 voteTable
where
 vote IS NOT NULL
group by 
 vote
order by
 numVotes desc

谁投票赞成每一个：

Select
 name,
 vote
from
 voteTable

......除非我误读了某些内容，否则应该是那么简单

Answer 3

select count(name), id from your_table where vote is not null group by (name) 

Answer 4

获得每人的票数：

select vote, 
       count(*) as nbr_of_votes 
  from table 
 where vote is not null 
 group by vote 
 order by nbr_of_votes desc;

要获得投票给谁，你基本上必须选择整个表格，而忽略空白

select vote, 
       name 
  from table
 where vote is not null 
 order by vote;

Answer 5

SELECT VOTE, COUNT(1) Number_Of_Votes,
GROUP_CONCAT(Name)
WHERE VOTE is Not NULL
GROUP BY VOTE