1

以下のように、1 つの列 (PO_list) の下の HeaderKey のコンマで区切られた発注書番号のリストを記録するために CTE クエリを使用しています。

HeaderKey       PO_list
1000215         101142-00-36, 101820-00-37, 103643-00-37, 104120-00-37, 104530-00-37,
                105095-00-37, 105700-00-37, 5062 SD, 99273-00-37, FIAT SAMPLES, S.RAPSON
                1000219 102288, 104545
1000220         104321-00-3, 104321-00-4, 104321-00-5, 105715-00-4, 105715-00-5, 105715-003

1 つのヘッダーキーの Freightcontents テーブルに、発注書のリストに 15 を超えるエントリがリストされている場合、スループット時間が過剰になるという問題に遭遇しました。誰かがこの問題の解決策を持っていることを願っています。

テーブル定義は以下の通り

/****** Object: Table [dbo].[FreightContents] Script Date: 02/19/2013 16:21:38 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

Create TABLE [dbo].[FreightContents](

[HeaderKey] [char](35) NOT NULL,

[PurchaseOrderNumber] [char](30) NOT NULL,

) ON [PRIMARY] 

GO

SET ANSI_PADDING OFF
GO

INSERT INTO FreightContents VALUES('FJ#1000210','104001-00-3') 
INSERT INTO FreightContents VALUES('FJ#1000211','SAMPLE' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','Hydraulic Cylinder' )
INSERT INTO FreightContents VALUES('FJ#1000211','99148/10182' )
INSERT INTO FreightContents VALUES('FJ#1000211','99148/101182' )
INSERT INTO FreightContents VALUES('FJ#1000211','99148' )
INSERT INTO FreightContents VALUES('FJ#1000211','99148' )
INSERT INTO FreightContents VALUES('FJ#1000211','101914' )
INSERT INTO FreightContents VALUES('FJ#1000211','101913' )
INSERT INTO FreightContents VALUES('FJ#1000211','101914' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101185' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101186' )
INSERT INTO FreightContents VALUES('FJ#1000211','101187' )
INSERT INTO FreightContents VALUES('FJ#1000211','101188' )
INSERT INTO FreightContents VALUES('FJ#1000211','101189' )
INSERT INTO FreightContents VALUES('FJ#1000211','101110' )
INSERT INTO FreightContents VALUES('FJ#1000211','101111' )
INSERT INTO FreightContents VALUES('FJ#1000211','101112' )
INSERT INTO FreightContents VALUES('FJ#1000211','101113' )
INSERT INTO FreightContents VALUES('FJ#1000211','101181' )
INSERT INTO FreightContents VALUES('FJ#1000211','101182')
INSERT INTO FreightContents VALUES('FJ#1000211','101914' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101914' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101914' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101185' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101182' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101182' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101182' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101186' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101182' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101187' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101186' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101185' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101184' ) 
INSERT INTO FreightContents VALUES('FJ#1000211','101183' )

CTE クエリは次のとおりです。

/****** Object: View [dbo].[CTE_POList_UK] Script Date: 02/19/2013 16:26:23 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO



CREATE VIEW [dbo].[CTE_POList_UK] as
WITH CTE ( HeaderKey, PO_list, product_name, length )
AS ( SELECT HeaderKey, CAST( '' AS VARCHAR(8000) ), CAST( '' AS VARCHAR(8000) ), 0
FROM Database1..FreightContents with(readuncommitted)
GROUP BY HeaderKey
UNION ALL
SELECT p.HeaderKey, CAST( PO_list +
CASE WHEN length = 0 THEN '' ELSE ', ' END + rtrim(PurchaseOrderNumber) AS VARCHAR(8000) ),
CAST( PurchaseOrderNumber AS VARCHAR(8000)), length + 1
FROM CTE c
INNER JOIN Database1..FreightContents p with(readuncommitted)
ON c.HeaderKey = p.HeaderKey
WHERE p.PurchaseOrderNumber > c.product_name )
SELECT HeaderKey, PO_list
FROM ( SELECT Distinct substring(HeaderKey,4,10), PO_list,
RANK() OVER ( PARTITION BY HeaderKey ORDER BY length DESC )
FROM CTE ) D ( HeaderKey, PO_list, rank )
WHERE rank = 1 ;

GO

作成すると、オブジェクト エクスプローラーでクエリを右クリックして選択すると、結果が表示されます。

4

2 に答える 2

1

これで試してください：

CREATE VIEW [dbo].[CTE_POList_UK2] 
AS
SELECT  DISTINCT 
        RIGHT(RTRIM(fc.HeaderKey), 7) HeaderKey
        ,
        STUFF(
        (   SELECT  ', ' + RTRIM(fc2.PurchaseOrderNumber)
            FROM    FreightContents fc2
            WHERE   fc2.HeaderKey = fc.HeaderKey
            FOR XML PATH(''), TYPE
        ).value('.', 'VARCHAR(MAX)')
        , 1, 2, '') PO_list
FROM    FreightContents fc

提案されたCTEを実行しようとしましたが、終了できませんでした。これにより、必要なリストを取得できます。

于 2013-02-19T19:05:55.923 に答える
0

この投稿のメソッドの1つ、特に「ブラックボックスXML」メソッドを試してください。

WITH cte (HeaderKey, PO_list)
As
(
   SELECT
      H.HeaderKey,
      (SELECT ', ' + RTrim(PurchaseOrderNumber)
      FROM Database1.dbo.FreightContents As P
      WHERE P.HeaderKey = H.HeaderKey
      FOR XML PATH(''), TYPE).value('.', 'varchar(max)')
   FROM
      Database1.dbo.FreightContents As H
   GROUP BY
      H.HeaderKey
)
SELECT
   Substring(HeaderKey, 4, 10) As HeaderKey,
   Stuff(PO_list, 1, 2, '') As PO_list
FROM
   cte
;

SQLフィドル

于 2013-02-19T18:57:57.250 に答える