怎麼算連續編號

Question

我有一個名爲「Waybill.WaybillRepository」名爲「ID」和「WaybillNumber」，列的SQL Server表數 這個表有一個像下面的一些行：

Id Stock Number 
-------------------------- 
1 8150312268 
2 8150312269 
3 8150312270 
4 8150312272 
5 8150312273 

現在我應該怎麼算的連續編號的數量並顯示第一個數字和每個連續的最後一個號碼，如下圖所示：

Row From   To   Count 
-------------------------------------------------- 
1 8150312268 8150312270 3 
2 8150312272 8150312273 2 

我的查詢是這樣的，

SELECT GroupID   = (y.WaybillNumber - y.Id), 
     FromWaybillNumber = MIN(y.WaybillNumber), 
     ToWaybillNumber = MAX(y.WaybillNumber), 
     Cnt    = COUNT(*) 
FROM (
    SELECT x.Id, x.WaybillNumber, ROW_NUMBER() OVER(ORDER BY x.Id) AS RowNum 
    FROM Waybill.WaybillRepository x 
) y 
GROUP BY (y.WaybillNumber - y.Id) 

，但它的輸出是錯誤的，它知道在這個範圍之間一個數已刪除，但無法正確顯示它

Row From   To   Count 
-------------------------------------------------- 
1 8150312268 8150312273 5 

它的工作終於 我的查詢是：

SELECT GroupID   = (y.WaybillNumber - RowNum), 
     FromWaybillNumber = MIN(y.WaybillNumber), 
     ToWaybillNumber = MAX(y.WaybillNumber), 
     Cnt    = COUNT(*) 
FROM (
    SELECT x.Id, x.WaybillNumber, ROW_NUMBER() OVER(ORDER BY x.Id) AS RowNum 
    FROM Waybill.WaybillRepository x 
) y 
GROUP BY (y.WaybillNumber - RowNum) 

Answer 1

既然知道表名稱;

;WITH rCTE AS 
(

    SELECT * 
      ,SequenceGroup = 1 
    FROM Repository BD 
    WHERE ID = 1 
    UNION ALL 
    SELECT BD.* 
      ,SequenceGroup = CASE WHEN BD.StockNumber - R.StockNumber = 1 THEN R.SequenceGroup ELSE R.SequenceGroup + 1 END 
    FROM rCTE  R 
    JOIN BaseData BD ON R.ID = BD.ID - 1 
) 
SELECT FromSN = MIN(StockNumber) 
     ,ToSN = MAX(StockNumber) 
     ,nCount = COUNT(*) 
FROM rCTE 
GROUP BY SequenceGroup 
OPTION (MAXRECURSION 0) 

像這樣。

;WITH BaseData (ID, StockNumber) AS 
(
    SELECT 1 ,8150286403 UNION ALL 
    SELECT 2 ,8150286404 UNION ALL 
    SELECT 3 ,8150286405 UNION ALL 
    SELECT 4 ,8150286406 UNION ALL 
    SELECT 5 ,8150286407 UNION ALL 
    SELECT 6 ,8150286408 UNION ALL 
    SELECT 7 ,8150286409 UNION ALL 
    SELECT 8 ,8150286410 UNION ALL 
    SELECT 9 ,8150286411 UNION ALL 
    SELECT 10 ,8150286412 UNION ALL 
    SELECT 11 ,8150286413 UNION ALL 
    SELECT 12 ,8150286414 UNION ALL 
    SELECT 13 ,8150286415 UNION ALL 
    SELECT 14 ,8150286416 UNION ALL 
    SELECT 15 ,8150286417 UNION ALL 
    SELECT 16 ,8150286418 UNION ALL 
    SELECT 17 ,8150286419 UNION ALL 
    SELECT 18 ,8150286420 UNION ALL 
    SELECT 19 ,8150286421 UNION ALL 
    SELECT 20 ,8150286422 UNION ALL 
    SELECT 21 ,8150286423 UNION ALL 
    SELECT 22 ,8150286424 UNION ALL 
    SELECT 23 ,8150286425 UNION ALL 
    SELECT 24 ,8150286426 UNION ALL 
    SELECT 25 ,8150286427 UNION ALL 
    SELECT 26 ,8150286428 UNION ALL 
    SELECT 27 ,8150286429 UNION ALL 
    SELECT 28 ,8150286430 UNION ALL 
    SELECT 29 ,8150286431 UNION ALL 
    SELECT 30 ,8150286432 UNION ALL 
    SELECT 31 ,8150286433 UNION ALL 
    SELECT 32 ,8150286434 UNION ALL 
    SELECT 33 ,8150286435 UNION ALL 
    SELECT 34 ,8150286436 UNION ALL 
    SELECT 35 ,8150286437 UNION ALL 
    SELECT 36 ,8150286438 UNION ALL 
    SELECT 37 ,8150286439 UNION ALL 
    SELECT 38 ,8150286440 UNION ALL 
    SELECT 39 ,8150286441 UNION ALL 
    SELECT 40 ,8150286442 UNION ALL 
    SELECT 41 ,8150286443 UNION ALL 
    SELECT 42 ,8150286444 UNION ALL 
    SELECT 43 ,8150286445 UNION ALL 
    SELECT 44 ,8150286446 UNION ALL 
    SELECT 45 ,8150286447 UNION ALL 
    SELECT 46 ,8150286448 UNION ALL 
    SELECT 47 ,8150286449 UNION ALL 
    SELECT 48 ,8150286450 UNION ALL 
    SELECT 49 ,8150286451 UNION ALL 
    SELECT 50 ,8150286452 UNION ALL 
    SELECT 51 ,8150286453 UNION ALL 
    SELECT 52 ,8150286454 UNION ALL 
    SELECT 53 ,8150286455 UNION ALL 
    SELECT 54 ,8150286456 UNION ALL 
    SELECT 55 ,8150286457 UNION ALL 
    SELECT 56 ,8150286458 UNION ALL 
    SELECT 57 ,8150286459 UNION ALL 
    SELECT 58 ,8150286460 UNION ALL 
    SELECT 59 ,8150286461 UNION ALL 
    SELECT 60 ,8150286462 UNION ALL 
    SELECT 61 ,8150286463 UNION ALL 
    SELECT 62 ,8150286464 UNION ALL 
    SELECT 63 ,8150286465 UNION ALL 
    SELECT 64 ,8150286466 UNION ALL 
    SELECT 65 ,8150286467 UNION ALL 
    SELECT 66 ,8150286468 UNION ALL 
    SELECT 67 ,8150286469 UNION ALL 
    SELECT 68 ,8150286470 UNION ALL 
    SELECT 69 ,8150286471 UNION ALL 
    SELECT 70 ,8150286472 UNION ALL 
    SELECT 71 ,8150286473 UNION ALL 
    SELECT 72 ,8150286474 UNION ALL 
    SELECT 73 ,8150286475 UNION ALL 
    SELECT 74 ,8150286476 UNION ALL 
    SELECT 75 ,8150286477 UNION ALL 
    SELECT 76 ,8150286478 UNION ALL 
    SELECT 77 ,8150286479 UNION ALL 
    SELECT 78 ,8150286480 UNION ALL 
    SELECT 79 ,8150286481 UNION ALL 
    SELECT 80 ,8150286482 UNION ALL 
    SELECT 81 ,8150286483 UNION ALL 
    SELECT 82 ,8150286484 UNION ALL 
    SELECT 83 ,8150286485 UNION ALL 
    SELECT 84 ,8150286486 UNION ALL 
    SELECT 85 ,8150286487 UNION ALL 
    SELECT 86 ,8150286488 UNION ALL 
    SELECT 87 ,8150286489 UNION ALL 
    SELECT 88 ,8150286490 UNION ALL 
    SELECT 89 ,8150286491 UNION ALL 
    SELECT 90 ,8150286492 UNION ALL 
    SELECT 91 ,8150286493 UNION ALL 
    SELECT 92 ,8150286494 UNION ALL 
    SELECT 93 ,8150286495 UNION ALL 
    SELECT 94 ,8150286496 UNION ALL 
    SELECT 95 ,8150286497 UNION ALL 
    SELECT 96 ,8150286498 UNION ALL 
    SELECT 97 ,8150286499 UNION ALL 
    SELECT 98 ,8150286500 UNION ALL 
    SELECT 99 ,8150306413 UNION ALL 
    SELECT 100 ,8150306417 UNION ALL 
    SELECT 101 ,8150306418 UNION ALL 
    SELECT 102 ,8150306419 UNION ALL 
    SELECT 103 ,8150306420 
) 
,rCTE AS 
(

    SELECT * 
      ,SequenceGroup = 1 
    FROM BaseData BD 
    WHERE ID = 1 
    UNION ALL 
    SELECT BD.* 
      ,SequenceGroup = CASE WHEN BD.StockNumber - R.StockNumber = 1 THEN R.SequenceGroup ELSE R.SequenceGroup + 1 END 
    FROM rCTE  R 
    JOIN BaseData BD ON R.ID = BD.ID - 1 
) 
SELECT FromSN = MIN(StockNumber) 
     ,ToSN = MAX(StockNumber) 
     ,nCount = COUNT(*) 
FROM rCTE 
GROUP BY SequenceGroup 
OPTION (MAXRECURSION 0)