如何从MySQL开始到指定日期的总计SELECT？

Question

我有entry表：

我需要做一个SELECT来接收'日期'，'条目数'（在那个日期），'到那个日期的条目总数'。

当我选择SELECT时：

SELECT e1.*, 
(select count(*) from entry where date(dateCreated) <= e1.date) as Total 
from (
SELECT 
  DATE(e.dateCreated) as "Date", 
  count(e.dateCreated) as "No of Entries",
  sum( case when e.premium='Y' then 1 else 0 end ) as Premium,
  sum( case when e.free='Y' then 1 else 0 end ) as Free,
  sum( case when e.affiliateID IS NOT NULL then 1 else 0 end) as Affiliate

 FROM entry e
 WHERE e.competitionID=166
 GROUP BY DATE(e.dateCreated)
 ) as e1
ORDER BY Date DESC

我有一个结果表

但“总计”列的数据错误。

如何正确选择？这种选择逻辑是最好的还是更有效的吗？

这是demo

Answer 1

如果只是5 vs 7关闭，我认为这是因为您的选择列表中的子查询访问内联视图e1（过滤到竞争ID = 166），本身并未过滤当还使用原始entry表（未过滤）时。您还必须将原始表格过滤到该竞争对手。

注意下面sql中的第3行（仅更改）

SELECT e1.*, 
(select count(*) from entry where date(dateCreated) <= e1.date
                              and competitionID=166) as Total 
from (
SELECT 
  DATE(e.dateCreated) as "Date", 
  count(e.dateCreated) as "No of Entries",
  sum( case when e.premium='Y' then 1 else 0 end ) as Premium,
  sum( case when e.free='Y' then 1 else 0 end ) as Free,
  sum( case when e.affiliateID IS NOT NULL then 1 else 0 end) as Affiliate

 FROM entry e
 WHERE e.competitionID=166
 GROUP BY DATE(e.dateCreated)
 ) as e1
ORDER BY Date DESC

小提琴 - http://sqlfiddle.com/#!9/e5e88/22/0