Sql查詢獲取表中每列的不同條目的計數

Question

假設我有一個數據庫中有60列的表。有人可以告訴我查詢來獲取表格每列（60）中所有不同條目的計數。

Cl1  Cl2 Cl3 
68722 No No No No No Yes Male No No 
68723 No Yes No No No Yes FeMale No No 
68725  No No No No Yes Male No No 

就像在上表假設我有10列（第1列至10列）

答案我想：

Cl2 No =2 , Blank=1 

Cl3 No=2, Yes =1 

等多達10

請給我一個Sql Server的查詢。

Answer 1

UNPIVOT + GROUP BY和COUNT：

SELECT [Columns], 
     Case when [Values] = '' THEN 'Blank' ELSE [Values] END [Values], 
     COUNT(Id) as HowMany 
FROM (
    SELECT Id, 
      CAST(Cl1 as nvarchar(max)) as Cl1, 
      CAST(Cl2 as nvarchar(max)) as Cl2, 
      CAST(Cl3 as nvarchar(max)) as Cl3, 
      CAST(Cl4 as nvarchar(max)) as Cl4, 
      CAST(Cl5 as nvarchar(max)) as Cl5, 
      CAST(Cl6 as nvarchar(max)) as Cl6, 
      CAST(Cl7 as nvarchar(max)) as Cl7, 
      CAST(Cl8 as nvarchar(max)) as Cl8, 
      CAST(Cl9 as nvarchar(max)) as Cl9 
    FROM YourTable 
) as t 
UNPIVOT (
    [Values] FOR [Columns] IN (Cl1, Cl2, Cl3, Cl4, Cl5, Cl6, Cl7, Cl8, Cl9) 
) as unpvt 
GROUP BY [Columns], [Values] 
ORDER BY [Columns] 

輸出：

你可以把這個在CTE和：

;WITH cte as (
    SELECT [Columns], 
      Case when [Values] = '' THEN 'Blank' ELSE [Values] END + '='+CAST(COUNT(Id) as nvarchar(max)) as HowMany 
    FROM (
     SELECT Id, 
       CAST(Cl1 as nvarchar(max)) as Cl1, 
       CAST(Cl2 as nvarchar(max)) as Cl2, 
       CAST(Cl3 as nvarchar(max)) as Cl3, 
       CAST(Cl4 as nvarchar(max)) as Cl4, 
       CAST(Cl5 as nvarchar(max)) as Cl5, 
       CAST(Cl6 as nvarchar(max)) as Cl6, 
       CAST(Cl7 as nvarchar(max)) as Cl7, 
       CAST(Cl8 as nvarchar(max)) as Cl8, 
       CAST(Cl9 as nvarchar(max)) as Cl9 
     FROM YourTable 
    ) as t 
    UNPIVOT (
     [Values] FOR [Columns] IN (Cl1, Cl2, Cl3, Cl4, Cl5, Cl6, Cl7, Cl8, Cl9) 
    ) as unpvt 
    GROUP BY [Columns], [Values] 
) 

SELECT DISTINCT 
      [Columns] +' '+  
      STUFF((
      SELECT ';'+HowMany 
      FROM cte 
      WHERE c.[Columns] = [Columns] 
      FOR XML PATH('') 
      ),1,1,'') as [Values] 
FROM cte c 

輸出：

Values 
Cl1 Blank=1;No=2 
Cl2 No=2;Yes=1 
Cl3 No=3 
Cl4 No=3 
Cl5 No=3 
Cl6 Yes=3 
Cl7 FeMale=1;Male=2 
Cl8 No=3 
Cl9 No=3