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INSERT INTOクエリのwhileループのパフォーマンスを改善しますか？

日付の範囲に対してSQLのWHILEループステートメントを使用する毎日のスナップショットを作成する簡単なクエリがあります。

問題は、クエリの実行に25〜40分と非常に時間がかかることです。日付テーブル、CTE、OVER WITHパーティション句を使用して書き換える方法を探しましたが、成功していません。

他のアプローチの主な課題の1つは、欠落している日付を記入していないように見えることです。在庫データには日付の穴がありますが、日付範囲内の毎日の毎日の残高が必要です。

誰かがこれをより効率的に書き換えることを手伝ってくれる？

DECLARE @SnapshotDate DATE = '2009-01-01' -- YYYY-MM-DD -- earliest date in inventory table
DECLARE @EndSnapshotDate DATE
SELECT @EndSnapshotDate = MAX(DateKey_FK_TransDate) FROM [FACT].[Inventory2]

WHILE (@SnapshotDate <= @EndSnapshotDate) 

BEGIN

    INSERT INTO [FACT].[InventoryBalance]
               (
                [DateKey_FK]
               ,[Company_FK]
               ,[ItemFinancialGroup_FK]
               ,[Balance]
               )
    SELECT 
           @SnapshotDate
          ,[Company_FK]
          ,[ItemFinancialGroup_FK]
          ,SUM([DebitCreditMST]) as 'Balance'
    FROM [FACT].[Inventory2]
    WHERE 
        [DateKey_FK_TransDate] <= @SnapshotDate

    GROUP BY 
           [Company_FK]
          ,[ItemFinancialGroup_FK]

    SET @SnapshotDate = DATEADD(DD, 1, @SnapshotDate) -- Add one day

END
GO

Fact.Inventory2には400万行が含まれ、InventoryBalanceの毎日のスナップショットは最終的に900万行になります。

提案されているように、サンプルデータを使用してソーステーブルと宛先テーブルを作成するためのテーブル定義を含めています。

    -- Create table with source data
CREATE TABLE [FACT].[Inventory_Sample](
    [Inventory_SK] [int] IDENTITY(1,1) NOT NULL,
    [DateKey_FK_TransDate] [int] NOT NULL,
    [Company_FK] [int] NOT NULL,
    [ItemFinancialGroup_FK] [int] NOT NULL,
    [DebitCredit] [numeric](28, 12) NOT NULL,
 CONSTRAINT [PK_InventorySample] PRIMARY KEY CLUSTERED 
(
    [Inventory_SK] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

SET IDENTITY_INSERT [FACT].[Inventory_Sample] ON 
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (1, 20090101, 11, 5, CAST(707722.750000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (2, 20090101, 11, 5, CAST(707722.750000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (3, 20090101, 11, 6, CAST(2674.660000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (4, 20090101, 11, 6, CAST(2674.660000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (5, 20090101, 20, 5, CAST(283.380000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (6, 20090101, 20, 5, CAST(283.380000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (7, 20090131, 11, 5, CAST(135398.310000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (8, 20090131, 11, 5, CAST(135398.310000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (9, 20090131, 11, 6, CAST(-1190.200000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (10, 20090131, 11, 6, CAST(-1190.200000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (11, 20090228, 11, 5, CAST(2032.880000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (12, 20090228, 11, 5, CAST(2032.880000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (13, 20090228, 11, 6, CAST(-665.330000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (14, 20090228, 11, 6, CAST(-665.330000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (15, 20090228, 20, 5, CAST(273.440000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (16, 20090228, 20, 5, CAST(273.440000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (17, 20090331, 11, 5, CAST(-207440.200000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (18, 20090331, 11, 5, CAST(-207440.200000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (19, 20090331, 11, 6, CAST(1568.000000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (20, 20090331, 11, 6, CAST(1568.000000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (21, 20090430, 11, 5, CAST(-41274.630000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (22, 20090430, 11, 5, CAST(-41274.630000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (23, 20090430, 11, 6, CAST(-0.020000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (24, 20090430, 11, 6, CAST(-0.020000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (25, 20090430, 20, 5, CAST(-273.440000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (26, 20090430, 20, 5, CAST(-273.440000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (27, 20090531, 11, 5, CAST(104859.530000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (28, 20090531, 11, 5, CAST(104859.530000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (29, 20090630, 11, 5, CAST(-16991.160000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (30, 20090630, 11, 5, CAST(-16991.160000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (31, 20090630, 20, 5, CAST(-283.380000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (32, 20090630, 20, 5, CAST(-283.380000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (33, 20090731, 11, 5, CAST(-13287.340000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (34, 20090731, 11, 5, CAST(-13287.340000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (35, 20090831, 11, 5, CAST(-36128.950000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (36, 20090831, 11, 5, CAST(-36128.950000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (37, 20090831, 20, 5, CAST(-1269.240000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (38, 20090831, 20, 5, CAST(-1269.240000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (39, 20090912, 20, 5, CAST(1269.240000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (40, 20090912, 20, 5, CAST(1269.240000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (41, 20090930, 11, 5, CAST(-65274.840000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (42, 20090930, 11, 5, CAST(-65274.840000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (43, 20090930, 11, 6, CAST(4199.020000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (44, 20090930, 11, 6, CAST(4199.020000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (45, 20091002, 20, 5, CAST(494.760000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (46, 20091002, 20, 5, CAST(494.760000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (47, 20091030, 20, 5, CAST(0.000000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (48, 20091030, 20, 5, CAST(0.000000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (49, 20091031, 11, 5, CAST(19651.780000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (50, 20091031, 11, 5, CAST(19651.780000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (51, 20091031, 11, 6, CAST(1298.400000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (52, 20091031, 11, 6, CAST(1298.400000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (53, 20091105, 20, 5, CAST(668.350000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (54, 20091105, 20, 5, CAST(668.350000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (55, 20091110, 20, 5, CAST(-668.350000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (56, 20091110, 20, 5, CAST(-668.350000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (57, 20091124, 20, 5, CAST(0.000000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (58, 20091124, 20, 5, CAST(0.000000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (59, 20091128, 20, 5, CAST(-494.760000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (60, 20091128, 20, 5, CAST(-494.760000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (61, 20091130, 11, 5, CAST(-59474.730000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (62, 20091130, 11, 5, CAST(-59474.730000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (63, 20091130, 11, 6, CAST(1966.440000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (64, 20091130, 11, 6, CAST(1966.440000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (65, 20091223, 20, 5, CAST(554.030000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (66, 20091223, 20, 5, CAST(554.030000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (67, 20091228, 20, 5, CAST(-554.030000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (68, 20091228, 20, 5, CAST(-554.030000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (69, 20091229, 20, 5, CAST(347.620000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (70, 20091229, 20, 5, CAST(347.620000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (71, 20091231, 11, 5, CAST(-41524.310000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (72, 20091231, 11, 5, CAST(-41524.310000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (73, 20091231, 11, 6, CAST(-782.340000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (74, 20091231, 11, 6, CAST(-782.340000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (75, 20091231, 20, 5, CAST(253.470000000000 AS Numeric(28, 12)))
GO
INSERT [FACT].[Inventory_Sample] ([Inventory_SK], [DateKey_FK_TransDate], [Company_FK], [ItemFinancialGroup_FK], [DebitCredit]) VALUES (76, 20091231, 20, 5, CAST(253.470000000000 AS Numeric(28, 12)))
GO
SET IDENTITY_INSERT [FACT].[Inventory_Sample] OFF
GO

-- Destination table which will hold daily balances
CREATE TABLE [FACT].[InventoryBalance_Sample](
    [Inventory_SK] [int] IDENTITY(1,1) NOT NULL,
    [DateKey_FK_TransDate] [int] NOT NULL,
    [Company_FK] [int] NOT NULL,
    [ItemFinancialGroup_FK] [int] NOT NULL,
    [Balance] [numeric](28, 12) NOT NULL,
 CONSTRAINT [PK_InventoryBalance_Sample] PRIMARY KEY CLUSTERED 
(
    [Inventory_SK] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

-- While loop to populate InventoryBalance_Sample table
DECLARE @SnapshotDate INT = '20090101' --YYYYMMDD
DECLARE @EndSnapshotDate INT = '20100101' --YYYYMMDD

WHILE (@SnapshotDate <= @EndSnapshotDate) 

BEGIN

    INSERT INTO [FACT].[InventoryBalance_Sample]
               ([DateKey_FK_TransDate]
               ,[Company_FK]
               ,[ItemFinancialGroup_FK]
               ,[Balance])
    SELECT 
           @SnapshotDate
          ,[Company_FK]
          ,[ItemFinancialGroup_FK]
          ,SUM([DebitCredit]) as 'Balance'
    FROM [FACT].[Inventory_Sample]
    WHERE 
        [DateKey_FK_TransDate] <= @SnapshotDate

    GROUP BY 
           [Company_FK]
          ,[ItemFinancialGroup_FK]

    SET @SnapshotDate = CAST(REPLACE(DATEADD(DD, 1, CONVERT(DATE, CONVERT(VARCHAR(8), @SnapshotDate), 112)),'-','') AS INT) -- Add one day

END
GO
sql-serverperformanceoptimizationsql-server-2016query-performance
3
Jasonn38

データのギャップは通常、JOINに対して実行できるカレンダーテーブルで修正できます。サンプルデータを考えると、以下はwhileループと同じ結果を生成するように見えます。

SELECT calendar.dt
     , i.Company_FK
     , i.ItemFinancialGroup_FK
     , SUM(i.DebitCredit)
FROM calendar 
JOIN Inventory_Sample i
    ON calendar.dt >= DateKey_FK_TransDate
GROUP BY calendar.dt, i.Company_FK, i.ItemFinancialGroup_FK
ORDER BY calendar.dt, i.Company_FK, i.ItemFinancialGroup_FK;

累積部分をJOIN条件に移動する方が、ウィンドウ関数とLEFT JOINを使用するよりも簡単だったので、最初の試みから変更しました。

2
Lennart