Question

我有一个查询，可以为员工提供销售信息。

查询的一个例子是：

Select Name, Customer_count, item1, item2, item3
from Invoices

输出：

Name    Customer_Count   item1   item2   item3
Rob         10             1       2       0
Bill        10             3       0       2
Jim         10             2       1       3

我有第二个查询来提取每个项目的百分比。

Select 
     Name, 
     Customer_count, 
     Cast(Cast(item1 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item1 , 
     Cast(Cast(item2 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item2, 
     Cast(Cast(item3 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item3
from Invoices


Name    Customer_Count   item1   item2   item3
Rob         10           10.00    20.00    0.00
Bill        10           30.00    0.00     20.00
Jim         10           20.00    10.00    30.00

我怎样才能输出以下输出，查询1，名称，查询2，不列出名称。：

Name    Customer_Count   item1   item2   item3
Rob         10             1        2       0
            10            10.00    20.00    0.00
Bill        10             3        0       2
            10             30       0.00    20.00
Jim         10             2        1       3
            10             20       10.00   30.00

Answer 1

这会让你非常接近。

select name, customer_count, item1, item2, item3
from 
(
    select 
    rownum = row_number() over (order by name),
    name, customer_count, item1, item2, item3
    from Invoices

    union 

    Select rownum = row_number() over (order by name), 
    '', Customer_count, 
    Cast(Cast(item1 as float) / Cast(Customer_Count as float) as decimal (10,2)) * 100 as item1 , 
    Cast(Cast(item2 as float) / Cast(Customer_Count as float) as decimal (10,2)) * 100 as item2, 
    Cast(Cast(item3 as float) / Cast(Customer_Count as float) as decimal (10,2)) * 100 as item3
    from Invoices
) x
order by rownum, name desc

注意item [n]值都有小数。我不确定如何让它看起来像你的例子，但也许这并不重要。

诺尔

Answer 2

您可以使用UNION ALL子句并执行两个查询的并集，然后使用FROM句子中的结果。要按照您希望的方式对行进行排序，您只需将主键列（或多列）添加到每个SELECT句子中，然后添加一个包含可见名称的列。此Visible_name列将包含第一个联合选择的Name值，而第二个选择将包含空字符串。

ORDER BY子句必须首先按主键列排序，然后按Visible_name列按降序排序。

假设Invoices表有一个Id列作为主键，查询可以如下：

SELECT * FROM

(Select Id, Name, Name AS Visible_name, Customer_count, item1, item2, item3
from Invoices

UNION ALL

Select
     Id,
     Name,
     '' AS Visible_Name, 
     Customer_count, 
     Cast(Cast(item1 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item1 , 
     Cast(Cast(item2 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item2, 
     Cast(Cast(item3 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item3
from Invoices
)

ORDER BY Id, Visible_name DESC

Answer 3

您可以使用两组混合物。使用跳数为2（2,4,6,8，...）的运行数创建两个集合，并在第二个集合中添加1（3,5,7,9，...）。

如果你在此之后对它进行排序，你将＆＃34;混合＆＃34;两套

我使用名字字段进行排序 - 这肯定是一个坏主意......

并且 - 如果您希望没有小数的项目显示为＆＃34; 1＆＃34;而不是＆＃34; 1.00＆＃34;，你必须做额外的输出格式......

编辑：我刚刚更换了＆＃34;名称＆＃34;在第二组中有一个空的空间......

DECLARE @dummyTbl TABLE(Name VARCHAR(100),Customer_count INT, item1 INT ,item2 INT,item3 INT);
INSERT INTO @dummyTbl VALUES
 ('Rob',10,1,2,0)
,('Bill',10,3,0,2)
,('Jim',10,2,1,3);

SELECT *
FROM
(
    Select ROW_NUMBER() OVER(ORDER BY Name) * 2 AS Nr
          ,Name, Customer_count, item1, item2, item3
    from @dummyTbl

    UNION ALL

    Select 
         ROW_NUMBER() OVER(ORDER BY Name) * 2 + 1 AS Nr,
         '', 
         Customer_count, 
         Cast(Cast(item1 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item1 , 
         Cast(Cast(item2 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item2, 
         Cast(Cast(item3 as float) / Cast(Customer_Count as float) as decimal (10,2)) as item3
    from @dummyTbl
) AS tbl
ORDER BY tbl.Nr

结果

Nr  Name    Customer_count  item1   item2   item3
2   Bill    10              3.00    0.00    2.00
3           10              0.30    0.00    0.20
4   Jim     10              2.00    1.00    3.00
5           10              0.20    0.10    0.30
6   Rob     10              1.00    2.00    0.00
7           10              0.10    0.20    0.00

使用name作为链接的多个查询

3 个答案: