是否有替代编写SQL查询语句以在同一行中显示单独的列值？

Question

我正在派生SQL查询语句来准备统计报告。在我的报告中，我需要在几个单独的列下显示值。这些column具有不同的数值范围。

(I.e.1, 2-4, 5-10, 11-19, 20-49, 
TotalForEachCategory)

。我如何制定我的SQL查询来做同样的事情？目前，这些值分开列。

我正在准备SSRS报告。为此，我需要开发SQL语句。反映在报表中的列在SQL表中不是物理的。因此，我需要派它们进行SQL聚合。例如，我需要显示属于不同车队范围的每个类别的“车辆总数”。

目前我的结果如下所示。 （不正确）

                            Fleet Ranges
----------------------------------------------------------------------
|  1  |  2-4  |  5-10  | 11-19  |  20-49  | TotalForCategory
----------------------------------------------------------------------
| 70  |   0   |   0    |   0    |    0    |        70
| 0   |  38   |   0    |   0    |    0    |        38
| 0   |   1   |   0    |   0    |    0    |         1
| 0   |   0   |  27    |   0    |    0    |        27

到目前为止我尝试过的

SQL查询：

SELECT
    (CASE WHEN F.mot_averagefleetsize = 1 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_1',
    (CASE WHEN F.mot_averagefleetsize BETWEEN 2 AND 4 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_2-4',
    (CASE WHEN F.mot_averagefleetsize BETWEEN 5 AND 10 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_5-10',
    (CASE WHEN F.mot_averagefleetsize BETWEEN 11 AND 19 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_11-19',
    (CASE WHEN F.mot_averagefleetsize BETWEEN 20 AND 49 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_20-49'
FROM
    Table1 F
INNER JOIN 
    Table2 M ON M.column1 = F.column2
GROUP BY
    F.mot_averagefleetsize

我的预期结果应如下所示：

                                  Fleet Ranges
----------------------------------------------------------------------
           |  1  |  2-4  |  5-10  | 11-19  |  20-49  | TotalForCategory
----------------------------------------------------------------------
Category #1| 70  |  39   |  27    |   0    |    0    |       136
           |

Answer 1

在Derived Table Aggregation之后使用SUM。您需要指定categoryfield

select 
categoryfield,
sum (Fleet_Range_1) Fleet_Range_1
sum (Fleet_Range_2-4) Fleet_Range_2-4
sum (Fleet_Range_5-10) Fleet_Range_5-10
sum (Fleet_Range_11-1) Fleet_Range_11-1
sum (Fleet_Range_20-49) Fleet_Range_20-49
from (
select
categoryfield
,(CASE WHEN F.mot_averagefleetsize = 1 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_1'
,(CASE WHEN F.mot_averagefleetsize BETWEEN 2 AND 4 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_2-4'
,(CASE WHEN F.mot_averagefleetsize BETWEEN 5 AND 10 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_5-10'
,(CASE WHEN F.mot_averagefleetsize BETWEEN 11 AND 19 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_11-19'
,(CASE WHEN F.mot_averagefleetsize BETWEEN 20 AND 49 THEN COUNT(M.mot_carriernumbername) ELSE 0 END) AS 'Fleet_Range_20-49'
from Table1 F
inner join Table2 M on M.column1 = F.column2
group by F.mot_averagefleetsize, categoryfield
) x
group by categoryfield