SQL Row_Number（）... by Order By ...）IGNORES命令文

Question

私が近づいていることをサポートする関数が見つかりませんでした。

は、我々は、私は、行番号をリセットしない場合は、重複が見つかったときに自分の価値を高め、私の行を列挙したいフィールドのソート順と特定の重複

 
+----------+----------+-----+-------------+-----------+ 
| UniqueId | Id | Qty | RetailPrice | SortOrder | 
+----------+----------+-----+-------------+-----------+ 
|  3124 | 92361725 | 25 |  269.99 |   1 | 
|  2627 | 92361725 | 25 |  269.99 |   2 | 
|  7635 | 92361725 | 25 |  269.99 |   3 | 
|  8732 | 92361725 | 25 |  269.99 |   4 | 
|  3791 | 92361725 | 20 |  269.99 |   5 | 
|  4328 | 92361725 | 25 |  269.99 |   6 | 
+----------+----------+-----+-------------+-----------+ 

が含まれている次の表があるとしましょう。

 
+----------+----------+-----+-------------+-----------+----+ 
| UniqueId | Id | Qty | RetailPrice | SortOrder | rn | 
+----------+----------+-----+-------------+-----------+----+ 
|  3124 | 92361725 | 25 |  269.99 |   1 | 1 | 
|  2627 | 92361725 | 25 |  269.99 |   2 | 2 | 
|  7635 | 92361725 | 25 |  269.99 |   3 | 3 | 
|  8732 | 92361725 | 25 |  269.99 |   4 | 4 | 
|  3791 | 92361725 | 20 |  269.99 |   5 | 1 | 
|  4328 | 92361725 | 25 |  269.99 |   6 | 1 | 
+----------+----------+-----+-------------+-----------+----+ 

私はROW_NUMBER（）機能を使用しようとしましたが、私は結果Iを得ることができません：数量を評価するための列である場合、結果は列RN次の表に示されなければなりません、誰でも助けることができて秩序が完全に無視され

;WITH Table1 AS(
SELECT 3124 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 1 SortOrder UNION ALL 
SELECT 2627 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 2 SortOrder UNION ALL 
SELECT 7635 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 3 SortOrder UNION ALL 
SELECT 8732 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 4 SortOrder UNION ALL 
SELECT 3791 UniqueId,92361725 Id, 20 Qty, 269.99 RetailPrice, 5 SortOrder UNION ALL 
SELECT 4328 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 6 SortOrder 
) 

SELECT UniqueId, Id, Qty, RetailPrice, SortOrder, 
ROW_NUMBER() OVER (PARTITION BY Qty ORDER BY SortOrder) rn 
FROM Table1 

 
+----------+----------+-----+-------------+-----------+----+ 
| UniqueId | Id | Qty | RetailPrice | SortOrder | rn | 
+----------+----------+-----+-------------+-----------+----+ 
|  3791 | 92361725 | 20 |  269.99 |   5 | 1 | 
|  3124 | 92361725 | 25 |  269.99 |   1 | 1 | 
|  2627 | 92361725 | 25 |  269.99 |   2 | 2 | 
|  7635 | 92361725 | 25 |  269.99 |   3 | 3 | 
|  8732 | 92361725 | 25 |  269.99 |   4 | 4 | 
|  4328 | 92361725 | 25 |  269.99 |   6 | 5 | 
+----------+----------+-----+-------------+-----------+----+ 

したいですか？

Answer 1

ここに行きます。あなたが2008年になって以来、私はこのテーブルをSortOrder +/- 1上で自分自身で結合してリードとラグを複製しました。また、サンプルセットを数量25の新しい島を考慮して更新しました。

申し訳ありませんが、サンプルセットを更新して、島3に2行追加し、2つのCTEを作成して島範囲を取得します。

--Updates Sample Set with 3 Islands. 
WITH Table1 AS(
SELECT 3124 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 1 SortOrder UNION ALL --Island 1 
SELECT 2627 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 2 SortOrder UNION ALL --Island 1 
SELECT 7635 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 3 SortOrder UNION ALL --Island 1 
SELECT 8732 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 4 SortOrder UNION ALL --Island 1 
SELECT 3791 UniqueId,92361725 Id, 20 Qty, 269.99 RetailPrice, 5 SortOrder UNION ALL --Island 2 
SELECT 4328 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 6 SortOrder UNION ALL --Island 3 
SELECT 4328 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 7 SortOrder UNION ALL --Island 3 
SELECT 4328 UniqueId,92361725 Id, 25 Qty, 269.99 RetailPrice, 8 SortOrder   --Island 3 
), 

--Creating a CTE to get the Lead and Lag since this is 2008. This will allow us to determine if a row is the first or last row of an island. 
LeadLagTable AS(
SELECT 
    Table1.UniqueId, 
    Table1.Id, 
    Table1.Qty, 
    Table1.RetailPrice, 
    Table1.SortOrder, 
    LeadTable.SortOrder AS LeadSortOrder, 
    LagTable.SortOrder AS LagSortOrder, 
    CASE 
     WHEN LagTable.SortOrder IS NULL THEN 1 
     ELSE 0 
     END AS StartRowFlag, 
    CASE 
     WHEN LeadTable.SortOrder IS NULL THEN 1 
     ELSE 0 
     END AS LastRowFlag 
FROM Table1 
LEFT JOIN Table1 LeadTable ON 
    Table1.SortOrder = LeadTable.SortOrder - 1 
    AND Table1.Qty = LeadTable.Qty 
LEFT JOIN Table1 LagTable ON 
    Table1.SortOrder = LagTable.SortOrder + 1 
    AND Table1.Qty = LagTable.Qty 
), 

--With the LeadLagTable we can now get the ranges for each island, as well as a unique ID for each island. 
Ranges AS (
SELECT 
    RangeStart, 
    RangeEnd, 
    ROW_NUMBER() OVER (ORDER BY RangeStart) AS RangeRowNum 
FROM (
    SELECT 
     StartRow.SortOrder AS RangeStart, 
     EndRow.SortOrder RangeEnd, 
     ROW_NUMBER() OVER (PARTITION BY StartRow.SortOrder ORDER BY EndRow.SortOrder) AS rn 
    FROM LeadLagTable StartRow 
    JOIN LeadLagTable EndRow ON 
     StartRow.StartRowFlag = 1 
     AND EndRow.LastRowFlag = 1 
     AND StartRow.SortOrder <= EndRow.SortOrder 
     AND StartRow.Qty = EndRow.Qty 
    ) tbl 
WHERE rn = 1 
) 

ここでは実際のクエリです。

--We now join on the island ranges, and partition by the Island ID. 
SELECT 
    UniqueId, 
    Id, 
    Qty, 
    RetailPrice, 
    SortOrder, 
    ROW_NUMBER() OVER (PARTITION BY RangeRowNum ORDER BY SortOrder) AS rn 
FROM Table1 
LEFT JOIN Ranges ON 
    Table1.SortOrder >= Ranges.RangeStart 
    AND Table1.SortOrder <= Ranges.RangeEnd