1

我的数据库中有一个包含数据的表，如下所示：

year    month   sales   mom       qoq   yoy
----------------
2010    1   80  -     - -
2010    2   61  -23.75%   - -
2010    3   81  32.79%    - -
2010    4   94  16.05%      -
2010    5   77  -18.09%     -
2010    6   75  -2.60%      -
2010    7   58  -22.67%     -
2010    8   74  27.59%      -
2010    9   98  32.43%      -
2010    10  97  -1.02%      -
2010    11  94  -3.09%      -
2010    12  63  -32.98%     -
2011    1   61  -3.17%      -23.75%
2011    2   79  29.51%      29.51%
2011    3   84  6.33%       3.70%
2011    4   100 19.05%      6.38%
2011    5   78  -22.00%     1.30%
2011    6   99  26.92%      32.00%
2011    7   78  -21.21%     34.48%
2011    8   63  -19.23%     -14.86%
2011    9   66  4.76%       -32.65%
2011    10  77  16.67%      -20.62%
2011    11  93  20.78%      -1.06%
2011    12  94  1.08%       49.21%

我想计算每个月期间（每一行）的月度、季度和年度销售百分比变化，如上面最后 3 列所示。
如何使用 T-SQL 在一个结果集中实现这一目标？我正在使用 SQL Server 2008 R2。谢谢。

4

2 回答 2

10

此查询仅适用于 MSSQL2012，但它的计划和执行时间要好得多

SELECT
    year,
    month,
    sales,
    (sales - LAG(sales, 1) over (ORDER BY year, month)) / LAG(sales, 1) over (ORDER BY year, month)*100 AS mom,
    (sales - LAG(sales, 4) over (ORDER BY year, month)) / LAG(sales, 4) over (ORDER BY year, month)*100 AS qoq,
    (sales - LAG(sales, 12) over (ORDER BY year, month)) / LAG(sales, 12) over (ORDER BY year, month)*100 AS yoy
FROM @tab
于 2013-06-27T12:21:09.117 回答
1

It would be nice to use window function with LAG here, but it works only in MSSQL2012. So I use row_number

declare @tab table (year int, month int, sales money)

insert into @tab values
(2010, 1, 80 ),(2010, 2, 61 ),(2010, 3, 81 ),
(2010, 4, 94 ),(2010, 5, 77 ),(2010, 6, 75 ),
(2010, 7, 58 ),(2010, 8, 74 ),(2010, 9, 98 ),
(2010, 10,  97 ),(2010, 11,  94 ),(2010, 12,  63 ),
(2011, 1, 61 ),(2011, 2, 79 ),(2011, 3, 84 ),
(2011, 4, 100),(2011, 5, 78 ),(2011, 6, 99 ),
(2011, 7, 78 ),(2011, 8, 63 ),(2011, 9, 66 ),
(2011, 10,  77 ),(2011, 11,  93 ),(2011, 12,  94 );

with cte as (
    select
        row_number() over (order by year, month) rn,
        year,
        month,
        sales
    from @tab
)
select
    year,
    month,
    sales,
    round((sales-(select sales from cte where cte.rn=t1.rn-1))/(select sales from cte where cte.rn=t1.rn-1)*100.0,2) as mom,
    round((sales-(select sales from cte where cte.rn=t1.rn-4))/(select sales from cte where cte.rn=t1.rn-4)*100.0,2) as qoq,
    round((sales-(select sales from cte where cte.rn=t1.rn-12))/(select sales from cte where cte.rn=t1.rn-12)*100.0,2) as yoy
from cte as t1
于 2013-06-27T11:14:33.910 回答