轉換Excel公式到SQL查詢

Question

這是Excel文件，我可以用公式來獲得TAT ORIG：

=IF((X3-W3)*24<=24,(X3-W3)*24, 
IF(AND(WEEKDAY(W3,2)<6,WEEKDAY(X3,2)<6),(NETWORKDAYS(W3,X3)-1+MOD(X3,1)-MOD(W3,1))*24, 
IF(OR(WEEKDAY(W3,2)>5,WEEKDAY(X3,2)>5),(NETWORKDAYS(W3,X3)*24)))) 

這是我以前在EXCEL

獲得價值爲 TAT ORIG公式

我需要相同的公式進行轉換 或欺騙以獲得現有的SQL表中相同的值，列名爲tat_orig

在此表中我需要tat_orig與SQL查詢來計算：

Answer 1

哇，我沒想到這這麼久。這裏是我得到的：

--Network days shim 
IF OBJECT_ID(N'NETWORKDAYS', N'FN') IS NOT NULL 
    DROP FUNCTION dbo.NETWORKDAYS; 
GO 
CREATE FUNCTION dbo.NETWORKDAYS(@d1 datetime, @d2 datetime) 
RETURNS int 
AS 
BEGIN 
    DECLARE @w1 int = DATEPART(weekday, @d1); 
    DECLARE @w2 int = DATEPART(weekday, @d1); 
    DECLARE @dd float = FLOOR(DATEDIFF(ms, @d1, @d2)/86400000.0); 

    -- network days is based on a holidays table; I just added this date arbitrarily so that 
    -- the results match what Excel says 
    DECLARE @holidays TABLE(holiday datetime); 
    INSERT INTO @holidays VALUES 
     ('2016-06-15'); 

    RETURN (@dd + @w2 - @w1)/7 * 5 + 
      @w2 - @w1 + 1 + 
      IIF(@w2 = 7, -1, 0) + 
      IIF(@w1 = 1, -1, 0) + 
      (SELECT COUNT(*) FROM @holidays WHERE @d1 <= holiday AND holiday < @d2); 
END 
GO 

-- turn around time shim 
IF OBJECT_ID(N'TURNAROUND', N'FN') IS NOT NULL 
    DROP FUNCTION dbo.TURNAROUND; 
GO 
CREATE FUNCTION dbo.TURNAROUND(@d1 datetime, @d2 datetime) 
RETURNS float 
AS 
BEGIN 
    DECLARE @w1 int = DATEPART(weekday, @d1); 
    DECLARE @w2 int = DATEPART(weekday, @d1); 
    DECLARE @nd int = dbo.NETWORKDAYS(@d1, @d2); 

    DECLARE @hd float = DATEDIFF(ms, @d1, @d2)/3600000.0; 
    DECLARE @td float = DATEDIFF(ms, CAST(@d1 AS TIME), CAST(@d2 AS TIME))/86400000.0; 

    RETURN (

    IIF(@hd <= 24.0, 
     @hd, 
     IIF(@w1 < 6 AND @w2 < 6, 
      24 * (@nd - 1 + @td), 
      IIF(@w2 > 5 OR @w1 > 5, 
       24 * @nd, 0)))); 
END 
GO 

-- the data 
DECLARE @items TABLE 
(
time_created datetime, 
time_responded datetime 
); 

INSERT INTO @items VALUES 
('2016-06-10 15:42:00.000', '2016-06-15 03:03:00.000'), 
('2016-06-15 01:28:00.000', '2016-06-15 03:03:00.000'), 
('2016-06-14 07:46:00.000', '2016-06-15 03:03:00.000'), 
('2016-07-04 05:35:25.000', '2016-07-04 19:05:48.000'), 
('2016-07-04 04:56:09.000', '2016-07-04 18:29:28.000'), 
('2016-07-04 09:15:33.000', '2016-07-04 22:08:43.000'), 
('2016-07-04 08:44:24.000', '2016-07-04 21:40:57.000'), 
('2016-07-04 07:14:51.000', '2016-07-04 21:39:24.000'); 

-- the results 
SELECT time_created, time_responded, dbo.TURNAROUND(time_created, time_responded) AS [TAT Orig] FROM @items; 

困難的部分是搞清楚日期算術。你不必聲明函數 - 它們是爲了清晰和計算中間值而存在的，但從技術上講，你應該能夠使用SELECT語句中的返回值。

順便說一句，如果您的計算列正在從下一行行取得值，那麼您就不算運氣了 - 這在SQL中不是不可能的，但它很接近。

我希望這有助於！

編輯：

我添加的日期差異大墊片。我在一年內添加了測試數據。

--Big datediff shim 
IF OBJECT_ID(N'DATEDIFFBIG', N'FN') IS NOT NULL 
    DROP FUNCTION dbo.DATEDIFFBIG; 
GO 
CREATE FUNCTION DATEDIFFBIG(@d1 datetime, @d2 datetime) 
RETURNS bigint 
AS 
BEGIN 
    RETURN CONVERT(bigint, DATEDIFF(day, @d1, @d2)) * 86400000 - 
     DATEDIFF(second, DATEADD(day, DATEDIFF(day, 0, @d1), 0), @d1) * 1000 + 
     DATEDIFF(second, DATEADD(day, DATEDIFF(day, 0, @d2), 0), @d2) * 1000; 
END 
GO 

--Network days shim 
IF OBJECT_ID(N'NETWORKDAYS', N'FN') IS NOT NULL 
    DROP FUNCTION dbo.NETWORKDAYS; 
GO 
CREATE FUNCTION dbo.NETWORKDAYS(@d1 datetime, @d2 datetime) 
RETURNS int 
AS 
BEGIN 
    DECLARE @w1 int = DATEPART(weekday, @d1); 
    DECLARE @w2 int = DATEPART(weekday, @d1); 
    DECLARE @dd float = FLOOR(dbo.DATEDIFFBIG(@d1, @d2)/86400000.0); 

    -- network days is based on a holidays table; I just added this date arbitrarily so that 
    -- the results match what Excel says 
    DECLARE @holidays TABLE(holiday datetime); 
    INSERT INTO @holidays VALUES 
     ('2016-06-15'); 

    RETURN (@dd + @w2 - @w1)/7 * 5 + 
      @w2 - @w1 + 1 + 
      IIF(@w2 = 7, -1, 0) + 
      IIF(@w1 = 1, -1, 0) + 
      (SELECT COUNT(*) FROM @holidays WHERE @d1 <= holiday AND holiday < @d2); 
END 
GO 

-- turn around time shim 
IF OBJECT_ID(N'TURNAROUND', N'FN') IS NOT NULL 
    DROP FUNCTION dbo.TURNAROUND; 
GO 
CREATE FUNCTION dbo.TURNAROUND(@d1 datetime, @d2 datetime) 
RETURNS float 
AS 
BEGIN 
    DECLARE @w1 int = DATEPART(weekday, @d1); 
    DECLARE @w2 int = DATEPART(weekday, @d1); 
    DECLARE @nd int = dbo.NETWORKDAYS(@d1, @d2); 

    DECLARE @hd float = dbo.DATEDIFFBIG(@d1, @d2)/3600000.0; 
    DECLARE @td float = dbo.DATEDIFFBIG(CAST(@d1 AS TIME), CAST(@d2 AS TIME))/86400000.0; 

    RETURN (

    IIF(@hd <= 24.0, 
     @hd, 
     IIF(@w1 < 6 AND @w2 < 6, 
      24 * (@nd - 1 + @td), 
      IIF(@w2 > 5 OR @w1 > 5, 
       24 * @nd, 0)))); 
END 
GO 

-- the data 
DECLARE @items TABLE 
(
time_created datetime, 
time_responded datetime 
); 

INSERT INTO @items VALUES 
('2016-06-10 15:42:00.000', '2016-06-15 03:03:00.000'), 
('2016-06-15 01:28:00.000', '2016-06-15 03:03:00.000'), 
('2016-06-14 07:46:00.000', '2016-06-15 03:03:00.000'), 
('2016-07-04 05:35:25.000', '2016-07-04 19:05:48.000'), 
('2016-07-04 04:56:09.000', '2016-07-04 18:29:28.000'), 
('2016-07-04 09:15:33.000', '2016-07-04 22:08:43.000'), 
('2016-07-04 08:44:24.000', '2016-07-04 21:40:57.000'), 
('2016-07-04 07:14:51.000', '2016-07-04 21:39:24.000'), 
('2015-07-04 07:14:51.000', '2016-07-04 21:39:24.000'); 

-- the results 
SELECT time_created, time_responded, dbo.TURNAROUND(time_created, time_responded) AS [TAT Orig] FROM @items;