SQL中的聚合以计算总和和百分比

Question

我的数据库中有这个数据，它显示了有多少用户被邀请和参与，我想计算以下内容：

1- 邀请总数（总数）。
2- 参与（允许的总和，to_be_paid， already_paid）。
3- 已响应（允许、to_be_paid、have_paid、user_declined、user_willing 的总和）。
4- 无响应（过期，提供的总和）。
5- 响应率（已响应/总计*100）。
6- 参与率（参与/总数*100）。

我希望能够得到这样的结果：

Answer 1

我认为这可以帮助你。我改成这个并测试它是正确的

  declare @Responded int
  declare @Total int
  declare @Participated int

  set @Total=(select SUM([count]) as Total from [dbo].[tb1])

  set @Participated=(select SUM([count]) as Participated  from [dbo].[tb1]
  where Status in('allowed', 'to_be_paid', 'already_paid'))

  set @Responded=( select SUM([count]) as Responded   from [dbo].[tb1]
  where Status in('allowed', 'to_be_paid', 'already_paid', 'user_declined', 'user_willing'))
(SELECT  [Status]
      ,cast([count] as DECIMAL(38,0))
  FROM [Identity].[dbo].[tb1]
  )
  union 
  (
  select 'Total',cast(@Total as DECIMAL(38,0))
  )
  union 
  (
  select 'Participated',cast(@Participated as DECIMAL(38,0))
  )
  union 
  (
  select 'Responded',cast(@Responded as DECIMAL(38,0))
  )
  union 
  (
  select 'No response',cast(SUM([count]) as DECIMAL(38,0)) as [count] from [dbo].[tb1]
  where Status in('expired', 'offered')
  )
  union(
  select 'Response rate', cast(((100.0 * @Responded)/ @Total)as DECIMAL(38,0)) as [count]
  )
  union(
  select 'Participation rate',cast(((100.0 * @Participated)/ @Total)as DECIMAL(38,0))as [count]
  )