带有 COUNT() 和 SUM() 以及 TOTAL 列的动态 PIVOT 表 SQL Server 2012

Question

我正在尝试做的事情（列名是动态传递的，但我是硬编码的，所以这个问题看起来更简单）：

我正在尝试使用 PIVOT 表查询数据库以汇总一个字段并计算 SQL Server 2012 表的行数，但此外，我正在尝试检索总计以COUNT() 和 SUM() 函数。

通常，数据透视表看起来像这样（这比我想要达到的要简单）：

declare @campos nvarchar (max)
select @campos  = coalesce(@campos + ',[' + Setor + ']', '[' + Setor + ']')
from dbo.TbFinanciamentos
group by Setor
order by Setor

declare @resultado nvarchar(max)
set @resultado =
        'select * from(select Setor, ''br-'' + lower(UF_FILIAL) as [hc-key] from dbo.TbFinanciamentos) a
		 pivot(
		     count(Setor)
			 for Setor in(' + @campos + ')
		 ) a'

execute(@resultado)

但是，我想将总数（总计）作为一个列，而不是我关注this tutorial，一切都很好。

到目前为止我所拥有的（正在工作）：

declare @campos nvarchar (max)
select @campos  = coalesce(@campos + ',[' + Setor + ']', '[' + Setor + ']')
from dbo.TbFinanciamentos
group by Setor
order by Setor

declare @total nvarchar(max)
select @total = coalesce(@total + 'isnull([' + Setor + '], 0) + ', 'isnull([' + Setor + '], 0) + ')
from dbo.TbFinanciamentos group by Setor order by Setor
set @total = left(@total, len(@total) - 1)

declare @resultado nvarchar(max)
set @resultado =
        'select *, '+ @total +' as [value] into #temp_total
         from (select Setor, ''br-'' + lower(UF_FILIAL) as [hc-key] from dbo.TbFinanciamentos) a
		 pivot(
		     count(Setor)
			 for Setor in(' + @campos + ')
		 ) b
         select * from #temp_total'

execute(@resultado)

但是，就像我为 COUNT() 所做的那样，我想为 SUM() 做并在同一个查询中检索两者。

到目前为止，我为实现我的目标所做的努力：

1. 我复制了 PIVOT 部分并尝试执行FULL OUTER JOIN，但问题是它重复列到最终结果会产生错误（无效的列名）。当我打印@resultado 时，列在重复。

declare @campos nvarchar (max)
select @campos  = coalesce(@campos + ',[' + Setor + ']', '[' + Setor + ']')
from dbo.TbFinanciamentos
group by Setor
order by Setor

declare @total nvarchar(max)
select @total = coalesce(@total + 'isnull([' + Setor + '], 0) + ', 'isnull([' + Setor + '], 0) + ')
from dbo.TbFinanciamentos group by Setor order by Setor
set @total = left(@total, len(@total) - 1)

declare @resultado nvarchar(max)
set @resultado =
        'select *, '+ @total +' as [value] into #temp_total
         from (
		     (select Setor, ''br-'' + lower(UF_FILIAL) as [hc-key] from dbo.TbFinanciamentos
				 pivot(
					 count(Setor)
					 for Setor in(' + @campos + ')
				 ) as b
			 ) as sth
			full outer join
			(
		     select cast(Valor_do_Emprestimo as float) as Valor_do_Emprestimo, Setor, ''br-'' + lower(UF_FILIAL) as [hc-key] from dbo.TbFinanciamentos
				 pivot(
					 count(Setor)
					 for Setor in(' + @campos + ')
				 ) as b
			 ) as sth_else
			on sth.[hc-key] = sth_else.[hc-key]
		 )
         select * from #temp_total'

execute(@resultado)

1. 我尝试UNPIVOT and PIVOT method，这也会产生无效列的错误。

Answer 1

不用说，做任何动态的事情都是很成问题的，因为你从来没有真正掌握过你的元数据。无论如何，当您有多个这样的条件聚合以使用 CASE 语句合并您的不同度量时，它更容易接受，例如

    SUM(CASE When Setor = ''' + Setor ''' then 1 else 0 end) 
as [' + Setor + '_Count], 
SUM(CASE When Setor = ''' + Setor ''' then Valor_do_Emprestimo else 0 end) 
as [' + Setor + '_Total],'

并以这种方式针对您的数据集构建单个查询。

无论如何，要回答您的具体问题，如果您想将这两者结合起来，您必须提供唯一的列名，这意味着您需要创建稍微不同的@campos 和@total 版本。在这里，我刚刚完成了@campos 来给你一个想法。

请注意，我还必须在第二个数据透视表中将 hc_key 更改为 hc_key2 以避免重复的列名。

declare @campos nvarchar (max)
select @campos  = coalesce(@campos + ',[' + Setor + ']', '[' + Setor + ']')
from dbo.TbFinanciamentos
group by Setor
order by Setor

declare @campos2 nvarchar (max)
select @campos2  = coalesce(@campos2 + ',[' + Setor + '_2]', '[' + Setor + '_2]')
from dbo.TbFinanciamentos
group by Setor
order by Setor

declare @total nvarchar(max)
select @total = coalesce(@total + 'isnull([' + Setor + '], 0) + ', 'isnull([' + Setor + '], 0) + ')
from dbo.TbFinanciamentos group by Setor order by Setor
set @total = left(@total, len(@total) - 1)

declare @resultado nvarchar(max)
set @resultado =
        'select * into #temp_total from (
        select *, '+ @total +' as [value]          from
        (
             select * from (select Setor, ''br-'' + lower(UF_FILIAL) as [hc-key] from dbo.TbFinanciamentos) pvt
                 pivot(
                     count([Setor])
                     for Setor in(' + @campos + ')
                 ) as b
             ) as sth
            full outer join
            (
               select *          from (
             select * from (select cast(Valor_do_Emprestimo as float) as Valor_do_Emprestimo, Setor+''_2'' as Setor, ''br-'' + lower(UF_FILIAL) as [hc-key2] from dbo.TbFinanciamentos ) pvt
                 pivot(
                    sum([Valor_do_Emprestimo])
                     for Setor in(' + @campos2 + ')
                 ) as b
             ) c
            ) as sth_else
            on sth.[hc-key] = sth_else.[hc-key2]
         ) d

         select * from #temp_total'
        execute(@resultado)