Question

有点奇怪的请求，但是有可能让单独的TSQL查询并排显示数据而不使用外连接吗？我想知道我是否完全复杂化了......

以下是我要做的事情：

我有12个查询会给我一个记录计数，我想要它们，而不是堆叠在一起，从右到左显示记录，好像它们在桌子上一样。 / p>

所以从这些查询：

SELECT COUNT(*) AS 'INTERNET JAN 12'
  FROM dbo.CONTACT AS AA
  JOIN dbo.Document AS BB
  ON AA.ACCOUNTNO = BB.ACCOUNTNO
 WHERE SOURCE IN ('INTERNET', 'EBAY', 'MSN', 'BING', 'GOOGLE', 'YAHOO')
   AND KEY1 = 'EA'
   AND MONTH(BB.Date) = 1
   AND  YEAR(BB.Date) = 2012

SELECT COUNT(*) AS 'INTERNET FEB 12'
  FROM dbo.CONTACT AS AA
  JOIN dbo.Document AS BB
  ON AA.ACCOUNTNO = BB.ACCOUNTNO
 WHERE SOURCE IN ('INTERNET', 'EBAY', 'MSN', 'BING', 'GOOGLE', 'YAHOO')
   AND KEY1 = 'EA'
   AND MONTH(BB.Date) = 2
   AND  YEAR(BB.Date) = 2012

 ...

SELECT COUNT(*) AS 'INTERNET DEC 12'
  FROM dbo.CONTACT AS AA
  JOIN dbo.Document AS BB
  ON AA.ACCOUNTNO = BB.ACCOUNTNO
 WHERE SOURCE IN ('INTERNET', 'EBAY', 'MSN', 'BING', 'GOOGLE', 'YAHOO')
   AND KEY1 = 'EA'
   AND MONTH(BB.Date) = 12
   AND  YEAR(BB.Date) = 2012

我希望结果集看起来像这样：

 INTERNET JAN 12     INTERNET FEB 12     ...     INTERNET DEC 12
 12                  25                          31

而不是这样：

 INTERNET JAN 12
 12

 INTERNET FEB 12
 25

 ...

 INTERNET DEC 12
 31

这是否可以在不添加其他字段并进行外连接的情况下实现？最终结果是在Excel电子表格中将其作为最终用户自动更新的查询。

Answer 1

如何使用临时表作为中间结果集来创建可以使用SUM的数据？如果您的TSQL风格是最近的并且来自Microsoft，那么CTE将会这样做：

;
WITH temp (Jan12, Feb12, /* ... */ ) AS (
SELECT 
    -- Jan 12
    CASE MONTH(BB.Date)
        WHEN 1 THEN 1 
        ELSE 0 
    END,
    -- Feb 12
    CASE MONTH(BB.Date)
        WHEN 2 THEN 1 
        ELSE 0 
    END
  FROM dbo.CONTACT AS AA
  JOIN dbo.Document AS BB
  ON AA.ACCOUNTNO = BB.ACCOUNTNO
 WHERE SOURCE IN ('INTERNET', 'EBAY', 'MSN', 'BING', 'GOOGLE', 'YAHOO')
   AND KEY1 = 'EA'
   AND  YEAR(BB.Date) = 2012 
)
SELECT SUM(Jan12) AS [Internet Jan 12], SUM(Feb12) AS [Internet Feb 12] -- ... and so on

话虽如此，您的案例可能更适合PIVOT - 如果没有您的数据库进行查询，我无法制作合理的样本;但要弄明白from the documentation.

应该很容易

TSQL - 有单独的查询并排显示数据吗？

1 个答案: