在T-SQL中創建數據透視表？

Question

我真的可以使用一些幫助來創建數據透視表。 我有一些行中的數據，而不是需要出現在列中，並置於其他記錄中的值旁邊。 數據目前采用以下格式：

Region  |  Location  |  Customer | CustomerKey |Status
North   |  New York  |  John     | 111         |Active
North   |  New York  |  Mary     | 112         |Active
North   |  Delaware  |  Bob      | 113         |Idle
North   |  New Jersey|  Bob      | 113         |Active
West    |  California|  Bob      | 113         |Inactive
West    |  Washington|  Greg     | 114         |Inactive
West    |  Utah      |  Tim      | 115         |Active
North   | All States |  Bob      | 113         |VIP Customer
North   | All States |  Mary     | 112         |Regular Customer
West    | All States |  Bob      | 113         |Regular Customer
West    | All States |  Tim      | 115         |Regular Customer
West    | All States |  Greg     | 114         |VIP Customer
North   | All States |  John     | 111         |Regular Customer

問題在於“狀態”列，該列可以包含一組值（非活動/活動/空閑）和另一組（VIP客戶和常規客戶）。 當“位置”列為“所有狀態”時，它使用VIP /常規值。 我想添加一個列，以使數據顯示在以下行中：

Region  |  Location  |  Customer | CustomerKey |Status   | VIPStatus
North   |  New York  |  John     | 111         |Active   | No
North   |  New York  |  Mary     | 112         |Active   | No
North   |  Delaware  |  Bob      | 113         |Idle     | Yes
North   |  New Jersey|  Bob      | 113         |Active   | Yes
West    |  California|  Bob      | 113         |Inactive | No
West    |  Washington|  Greg     | 114         |Inactive | Yes
West    |  Utah      |  Tim      | 115         |Active   | No

基本上，如果客戶擁有“VIP客戶”狀態的記錄，則在“區域”和“所有州”的相應位置值的組合下，它將顯示“VIP狀態”為“是”或“否” '在該給定區域下的該客戶的任何記錄下（無論位置狀態如何）。 有一個簡單的解決方案嗎？ 任何幫助重新排列這些數據將在T-SQL中非常感激。

Answer 1

您應該能夠多次加入表格以獲得所需的結果：

select t1.region,
  t1.location,
  t1.customer,
  t1.customerkey,
  t1.status,
  case when t2.status is not null then 'Yes' else 'No' end VIPStatus
from yourtable t1
left join yourtable t2
  on t1.CustomerKey = t2.CustomerKey 
  and t2.Location = 'All States' 
  and t2.status = 'VIP Customer'
where t1.Location <> 'All States' 

請參閱SQL Fiddle with Demo

結果是：

| REGION |   LOCATION | CUSTOMER | CUSTOMERKEY |   STATUS | VIPSTATUS |
-----------------------------------------------------------------------
|  North |   New York |     John |         111 |   Active |        No |
|  North |   New York |     Mary |         112 |   Active |        No |
|  North |   Delaware |      Bob |         113 |     Idle |       Yes |
|  North | New Jersey |      Bob |         113 |   Active |       Yes |
|   West | California |      Bob |         113 | Inactive |       Yes |
|   West | Washington |     Greg |         114 | Inactive |       Yes |
|   West |       Utah |      Tim |         115 |   Active |        No |