在一组通过查询

我一直在试图创建以下查询枢轴：在一组通过查询

select mainstate, customertypeid, count(1) as [counter] from customers group by customertypeid, mainstate

此查询应显示每个国家尽可能多的客户类型，它看起来像这样（ORDER BY没有按”牛逼事）：

State|customertypeid|counter 
    UT  3   200 
    CA  3   500 
    NY  3   300 
    UT  2   100 
    CA  2   200 
    NY  2   120 
    UT  1    20 
    CA  1    50 
    NY  1    30

我试着使用PIVOT如下（我敢肯定，我错了）：

SELECT * 
FROM (select mainstate, customertypeid, count(1) as [counter] from customers where customertypeid in (1,2,3) and mainstate != '' group by customertypeid, mainstate) as NonPivotedDataForReport2 
PIVOT 
(
COUNT([counter]) 
FOR mainstate IN ([# of Amb],[# Whole Sale Customers],[# Retail Customers]) 
) AS PivotedDataForReport2

我得到这个：

customertypeid|type1|type2|type3 
     1   0  0  0 
     2   0  0  0 
     3   0  0  0

，报告应该是这样的：

State|type1|type2|type3 
UT  20 100 200 
CA  50 200 500 
NY  30 120 300

* PS：我真的不想回去CASE + SUM声明，

非常感谢！

来源

2013-02-26 Angel Escobedo

这样做：

SELECT mainstate [State], 
     [1] type1, 
     [2] type2, 
     [3] type3 
FROM ( SELECT mainstate, customertypeid, COUNT(1) [counter] 
     FROM customers 
     WHERE customertypeid in (1,2,3) 
     AND mainstate != '' 
     GROUP BY customertypeid, mainstate) as NonPivotedDataForReport2 
PIVOT(SUM([counter]) FOR customertypeid IN ([1],[2],[3])) AS PivotedDataReport2

来源

2013-02-26 20:11:09 Lamak

+1：该死，打我吧。这是正确的答案。 – 2013-02-26 20:17:25

谢谢，这项工作的魅力。 – 2013-02-26 20:25:52

@AngelEscobedo听起来不错:-) – Lamak 2013-02-26 20:26:26

这（可能稍微改动过），应该为你做的工作不区分/和/支点。创建临时表，插入起始数据，然后根据有多少个客户类型ID来动态添加列。

declare @s varchar(10), @xx1 varchar(500) 

select distinct state into #temp from customers 

DECLARE myCursor CURSOR FOR SELECT distinct customertypeid from customers 
open MyCursor 
FETCH NEXT FROM myCursor into @S 
WHILE @@FETCH_STATUS = 0 
    begin 
     set @xx1 = 'alter table #temp add ['[email protected]+'] varchar(5)' 
     execute sp_executesql @xx1 
      set @xx1 = 'update a set a.['[email protected]+'] = coalesce(b.counter,0) from #temp a, customers b where b.customertypeid = '[email protected]+' and a.state = b.state' 
      execute sp_executesql @xx1 
     FETCH NEXT FROM myCursor into @S 
    End 
Close myCursor 
DEALLOCATE myCursor 

select * from #temp

来源

2013-02-26 20:11:20 JohnZ

如果您知道前面的列并且客户ID不变，Lamak的答案是更简单的方法。如果您事先并不了解这些列，那么动态添加列将是您的方式。 – JohnZ 2013-02-26 20:20:02

在一组通过查询

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