使用MSAccess数据库跟踪十二个月公式

我有一个名为Cash_Flow_Statements的数据库,我需要创建一个保存的查询,计算一个追踪十二个月(TTM)的自由现金流。

我有一个名为Cash_Flow_Statements的数据库,我需要创建一个保存的查询,计算一个追踪十二个月(TTM)的自由现金流。

是我的数据库的一个例子:

Cash_Flow_Statement

这里是我保存的查询的代码。我已经将此代码用于其他计算,所以我知道它的工作原理。我只是不知道如何在 SQL 中做一个 Trailing Twelve Month。

CREATE PROC " & Calculation & " AS _
SELECT Income_Statements.Ticker, Income_Statements.[Year], Income_Statements.Period, _
" & Formula & " AS TTM _
FROM (Income_Statements AS Income_Statements INNER JOIN Balance_Sheets AS Balance_Sheets ON (Income_Statements.Ticker = Balance_Sheets.Ticker) AND (Income_Statements.[Year] = Balance_Sheets.[Year]) AND (Income_Statements.Period = Balance_Sheets.Period)) _
INNER JOIN Cash_Flow_Statements AS Cash_Flow_Statements ON (Balance_Sheets.Ticker = Cash_Flow_Statements.Ticker) AND (Balance_Sheets.[Year] = Cash_Flow_Statements.[Year]) AND (Balance_Sheets.Period = Cash_Flow_Statements.Period)

我需要变量Formula来包含将计算自由现金流的拖尾十二个月的方程。

自由现金流 TTM = Sum (经营现金流 MRQ1 + 经营现金流 MRQ2 + 经营现金流 MRQ3 + 经营现金流 MRQ4)-Sum (资本支出 MRQ1 + 资本支出 MRQ2 + 资本支出 MRQ3 + 资本支出 MRQ4)

MRQ = 最近季度

我需要这个公式在 SQL 中。

UPDATE

Per @ Gord Thompson 的回答我想出了这个代码:

SELECT Ticker, [Year], Period, (SELECT (SUM(su.Net_Cash_Flow_Operating) - SUM(su.Capital_Expenditures)) _
FROM (SELECT Ticker, [Year], Period, Net_Cash_Flow_Operating, Capital_Expenditures _
FROM Cash_Flow_Statements _
UNION ALL _
SELECT Ticker, [Year] + 1, Period - 4, Net_Cash_Flow_Operating, Capital_Expenditures _
FROM Cash_Flow_Statements) su _
WHERE su.Ticker = s.Ticker AND su.[Year] = s.[Year] AND (su.Period Between s.Period - 3 And s.Period)) _
AS SalesLast12Months _
FROM Cash_Flow_Statements AS s

但是正如我在我的原始帖子中提到的,我需要能够设置变量Formula以包含 SQL 语句,然后将其插入到现有的 SQL 语句中。

所以我试图适应 @ Gord Thompson 的答案,我已经提出了这个。

公式:

Formula = “(SELECT (SUM(su.Net_Cash_Flow_Operating) - SUM(su.Capital_Expenditures)) _
FROM (SELECT Ticker, [Year], Period, Net_Cash_Flow_Operating, Capital_Expenditures _
FROM Cash_Flow_Statements UNION ALL SELECT Ticker, [Year] + 1, Period - 4, Net_Cash_Flow_Operating, Capital_Expenditures _
FROM Cash_Flow_Statements) su _
WHERE su.Ticker = Cash_Flow_Statements.Ticker AND su.[Year] = Cash_Flow_Statements.[Year] AND (su.Period Between Cash_Flow_Statements.Period - 3 And Cash_Flow_Statements.Period))”

SQL 语句:

"CREATE PROC " & Calculation & " AS SELECT Income_Statements.Ticker, Income_Statements.[Year], Income_Statements.Period, " & Formula & " AS TTM _
FROM (Income_Statements AS Income_Statements _
INNER JOIN Balance_Sheets AS Balance_Sheets ON (Income_Statements.Ticker = Balance_Sheets.Ticker) AND (Income_Statements.[Year] = Balance_Sheets.[Year]) AND (Income_Statements.Period = Balance_Sheets.Period)) _
INNER JOIN Cash_Flow_Statements AS Cash_Flow_Statements ON (Balance_Sheets.Ticker = Cash_Flow_Statements.Ticker) AND (Balance_Sheets.[Year] = Cash_Flow_Statements.[Year]) AND (Balance_Sheets.Period = Cash_Flow_Statements.Period)

这是结果:

enter image description here

再次,这是非常接近的,但不是我所需要的。我相信我知道是什么原因导致代码在适应时不起作用,但我不知道如何修复它。在 @ Gord Thompson 代码中,最后一行是FROM Cash_Flow_Statements AS s。当我将变量公式插入到我原来的帖子中的现有 SQL 语句中时,代码是FROM (Income_Statements AS Income_Statements _ INNER JOIN Balance_Sheets AS Balance_Sheets ON (Income_Statements.Ticker = Balance_Sheets.Ticker) AND (Income_Statements.[Year] = Balance_Sheets.[Year]) AND (Income_Statements.Period = Balance_Sheets.Period)) _ INNER JOIN Cash_Flow_Statements AS Cash_Flow_Statements ON (Balance_Sheets.Ticker = Cash_Flow_Statements.Ticker) AND (Balance_Sheets.[Year] = Cash_Flow_Statements.[Year]) AND (Balance_Sheets.Period = Cash_Flow_Statements.Period)

2

让我们不要太纠结于列,让我们集中精力选择合适的行。

假设我们有一个名为 [SalesSummary] 的表,其中包含

Item      FiscalYear  Quarter  TotalSales
--------  ----------  -------  ----------
bicycles        2011        1         100
bicycles        2011        2         200
bicycles        2011        3         300
bicycles        2011        4         400
bicycles        2012        1         500
bicycles        2012        2         600
bicycles        2012        3         700
bicycles        2012        4         800
ham             2011        1          10
ham             2011        2          20
ham             2011        3          30
ham             2011        4          40
ham             2012        1          50
ham             2012        2          60
ham             2012        3          70
ham             2012        4          80

如果我们想创建一个查询,以显示过去 12 个月(当前季度加上前 3 个季度)的季度数据以及总销售额,则可能会认为我们必须开始使用IIf()来处理从一个 FiscalYear 到下一个 FiscalYear 的“环绕”。幸运的是,我们没有,因为我们可以将相同的数据与下一个 FiscalYear_2012 的“假

    SELECT
        Item,
        FiscalYear,
        Quarter,
        TotalSales
    FROM SalesSummary
UNION ALL
    SELECT
        Item,
        FiscalYear + 1,
        Quarter - 4,
        TotalSales
    FROM SalesSummary

返回

Item      FiscalYear  Quarter  TotalSales
--------  ----------  -------  ----------
bicycles        2011        1         100
bicycles        2011        2         200
bicycles        2011        3         300
bicycles        2011        4         400
bicycles        2012        1         500
bicycles        2012        2         600
bicycles        2012        3         700
bicycles        2012        4         800
ham             2011        1          10
ham             2011        2          20
ham             2011        3          30
ham             2011        4          40
ham             2012        1          50
ham             2012        2          60
ham             2012        3          70
ham             2012        4          80
bicycles        2012       -3         100
bicycles        2012       -2         200
bicycles        2012       -1         300
bicycles        2012        0         400
bicycles        2013       -3         500
bicycles        2013       -2         600
bicycles        2013       -1         700
bicycles        2013        0         800
ham             2012       -3          10
ham             2012       -2          20
ham             2012       -1          30
ham             2012        0          40
ham             2013       -3          50
ham             2013       -2          60
ham             2013       -1          70
ham             2013        0          80

如果我们将该查询保存为 [SalesUnion],那么我们可以使用它来生成我们的总数,如下所示

SELECT 
    Item,
    FiscalYear,
    Quarter,
    TotalSales,
    (
        SELECT 
            SUM(su.TotalSales) 
            FROM SalesUnion su 
            WHERE su.Item = s.Item 
                AND su.FiscalYear = s.FiscalYear 
                AND (su.Quarter Between s.Quarter - 3 And s.Quarter)
    ) AS SalesLast12Months
FROM SalesSummary s

或者,如果你不想依靠一个保存的查询,你可以做这一切在一个去:

SELECT 
    Item,
    FiscalYear,
    Quarter,
    TotalSales,
    (
        SELECT 
            SUM(su.TotalSales) 
            FROM 
                (
                        SELECT
                            Item,
                            FiscalYear,
                            Quarter,
                            TotalSales
                        FROM SalesSummary
                    UNION ALL
                        SELECT
                            Item,
                            FiscalYear + 1,
                            Quarter - 4,
                            TotalSales
                        FROM SalesSummary
                ) su 
            WHERE su.Item = s.Item 
                AND su.FiscalYear = s.FiscalYear 
                AND (su.Quarter Between s.Quarter - 3 And s.Quarter)
    ) AS SalesLast12Months
FROM SalesSummary s

无论哪种方式,结果是

Item      FiscalYear  Quarter  TotalSales  SalesLast12Months
--------  ----------  -------  ----------  -----------------
bicycles        2011        1         100                100
bicycles        2011        2         200                300
bicycles        2011        3         300                600
bicycles        2011        4         400               1000
bicycles        2012        1         500               1400
bicycles        2012        2         600               1800
bicycles        2012        3         700               2200
bicycles        2012        4         800               2600
ham             2011        1          10                 10
ham             2011        2          20                 30
ham             2011        3          30                 60
ham             2011        4          40                100
ham             2012        1          50                140
ham             2012        2          60                180
ham             2012        3          70                220
ham             2012        4          80                260
0

变量Formula应包含以下内容:

SELECT (SUM(su.Net_Cash_Flow_Operating) - SUM(su.Capital_Expenditures)) FROM (SELECT Ticker, [Year], Period, Net_Cash_Flow_Operating, Capital_Expenditures FROM Cash_Flow_Statements UNION ALL SELECT Ticker, [Year] + 1, Period - 4, Net_Cash_Flow_Operating, Capital_Expenditures FROM Cash_Flow_Statements) su WHERE su.Ticker = c.Ticker AND su.[Year] = c.[Year] AND (su.Period Between c.Period - 3 And c.Period)

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