Question

我正在尝试计算一个数字列表落入某个范围的次数。

数据：

advance:
--------
5000
5000
10125
5000
0
15000
[NULL]
7000
8000
[NULL]
7000
2275
6000
2000
4000
7000
4000
8000

使用case语句并在一个查询中计数。案例陈述：

CASE
    WHEN
        advance > 10000
    THEN
        /* Display as 'High'*/
    WHEN
        advance >= 5000 and advance <= 10000
    THEN
        /*Display as 'Moderate'*/
    WHEN
        advance < 5000
    THEN
        /*Display as 'Low'*/
    ELSE
       /*Display as 'N/A'*/ 
END

但与此相关的是数据必须在单个单元格中格式化。到目前为止我所拥有的：

"i.  Category       " + "Number" + char(13)+char(10) +
"ii.  -----------------------------------" + char(13)+char(10) +
"iii. High:            " + /*Display High*/ + char(13)+char(10) +
"iv. Low:            " + /*Display Low*/ + char(13)+char(10) +
"v.  Moderate:    " + /*Display Moderate*/ + char(13)+char(10) +
"vi. N/A              " + /*Display N/A */ +

所以最终结果应如下所示：

i.   Category     Number
ii.  --------------------
iii. High         5
iv.  Low     
v.   Moderate     
vi.  N/A

我正在使用Sybase编写此查询，通常我不会寻求帮助。我只是陷入困境，无法围绕这个缠绕我的大脑。感谢

Answer 1

您可以使用GROUP BY声明：

SELECT Category, Count(Category)
FROM (SELECT CASE
              WHEN advance > 10000
                 THEN 'High' as Category
              WHEN advance >= 5000 and advance <= 10000
                 THEN 'Moderate' as Category
              WHEN advance < 5000
                 THEN 'Low' as Category
              ELSE
                 'N/A' as Category
             END
        FROM your_table_name) as CategoriesResult
GROUP BY Category

如果您想生成单个文本值，可以将其包装到一个额外的查询中，并将最终结果集的每条记录追加到结果文本值中：

DECLARE @result AS VARCHAR(MAX)

SET @result = "i.  Category       Number" + char(13) + char(10) +
              "ii.  -----------------------------------" + char(13) + char(10)

SELECT @result = @result + CONVERT(varchar(8), Category) 
                         + " "
                         + CONVERT(VARCHAR(8), CategoryCount) + char(13) + char(10)
 FROM
   (SELECT Category, Count(Category) as CategoryCount
       FROM (SELECT CASE
                     WHEN advance > 10000
                        THEN 'High' as Category
                     WHEN advance >= 5000 and advance <= 10000
                        THEN 'Moderate' as Category
                     WHEN advance < 5000
                        THEN 'Low' as Category
                     ELSE
                        'N/A' as Category
                    END
               FROM your_table_name) as CategoriesResult
       GROUP BY Category
   )SourceTable

Answer 2

我不确定它有效，但我希望我的想法可以帮助你

select "i.  Category       " + "Number" + char(13)+char(10) +
"ii.  -----------------------------------" + char(13)+char(10) +
"iii. High:            " + cast((select count(1)
                                 from tabData
                                 where  advance > 10000) as varchar) + char(13)+char(10) +
"iv. Low:            " + cast((select count(1)
                               from tabData
                               where  advance >= 5000  
                               and advance <= 10000) as varchar) + char(13)+char(10) +
"v.  Moderate:    " + cast((select count(1)
                            from tabData
                            where advance < 5000) as varchar) + char(13)+char(10) +
"vi. N/A              " + cast((select count(1)
                                from tabData
                                where  advance is null) as varchar)

使用case语句计数以查找范围

2 个答案: