[英]TSQL Dynamic Pivot with two alternating columns
我有一個表格,該表格在多個日期向客戶多次付款,如下所示:
Claimid Payorder Date Raised Amount
79 1 05/12/2013 120000.00
79 2 19/10/2013 1138873.90
79 3 29/10/2013 150000.00
79 4 30/10/2013 11126.10
678 1 09/02/2006 467207.65
我需要透視數據,使其看起來像這樣:
[Claimid] [Date_Raised_1] [Payment_1] [Date_Raised_2] [Payment_2]
79 05/12/2013 120000 19/10/2013 1138873.9
誰能幫我這個? -它也必須是動態的,因為任何索賠都可以有很多付款。
這就是我想出的:
CREATE TABLE #Sample
(
ClaimId INT
, PayOrder INT
, DateRaised DATE
, Amount FLOAT
);
DECLARE @SQL VARCHAR(MAX) = 'SELECT ClaimId';
INSERT INTO #Sample (ClaimId, PayOrder, DateRaised, Amount)
VALUES (79, 1, CONVERT(DATE, '05/12/2013', 103), 120000.00)
, (79, 2, CONVERT(DATE, '19/10/2013', 103), 1138873.90)
, (79, 3, CONVERT(DATE, '29/10/2013', 103), 150000.00)
, (79, 4, CONVERT(DATE, '30/10/2013', 103), 11126.10)
, (678, 1, CONVERT(DATE, '09/02/2006', 103), 467207.65);
SELECT @SQL += '
, MAX(CASE WHEN PayOrder = ' + PayOrder + ' THEN DateRaised END) AS [DateRaised_' + PayOrder + ']
, MAX(CASE WHEN PayOrder = ' + PayOrder + ' THEN Amount END) AS [Payment_' + PayOrder + ']'
FROM (SELECT DISTINCT CONVERT(VARCHAR, PayOrder) AS PayOrder FROM #Sample) AS T
ORDER BY T.PayOrder;
SET @SQL += 'FROM #Sample GROUP BY ClaimId;';
EXECUTE (@SQL);
DROP TABLE #Sample;
該查詢將為每個DISTINCT PayOrder
生成列,並在您的測試用例中生成以下查詢:
SELECT ClaimId
, MAX(CASE WHEN PayOrder = 1 THEN DateRaised END) AS [DateRaised_1]
, MAX(CASE WHEN PayOrder = 1 THEN Amount END) AS [Payment_1]
, MAX(CASE WHEN PayOrder = 2 THEN DateRaised END) AS [DateRaised_2]
, MAX(CASE WHEN PayOrder = 2 THEN Amount END) AS [Payment_2]
, MAX(CASE WHEN PayOrder = 3 THEN DateRaised END) AS [DateRaised_3]
, MAX(CASE WHEN PayOrder = 3 THEN Amount END) AS [Payment_3]
, MAX(CASE WHEN PayOrder = 4 THEN DateRaised END) AS [DateRaised_4]
, MAX(CASE WHEN PayOrder = 4 THEN Amount END) AS [Payment_4]
FROM #Sample
GROUP BY ClaimId;
那是輸出:
╔═════════╦══════════════╦═══════════╦══════════════╦═══════════╦══════════════╦═══════════╦══════════════╦═══════════╗
║ ClaimId ║ DateRaised_1 ║ Payment_1 ║ DateRaised_2 ║ Payment_2 ║ DateRaised_3 ║ Payment_3 ║ DateRaised_4 ║ Payment_4 ║
╠═════════╬══════════════╬═══════════╬══════════════╬═══════════╬══════════════╬═══════════╬══════════════╬═══════════╣
║ 79 ║ 2013-12-05 ║ 120000 ║ 2013-10-19 ║ 1138873.9 ║ 2013-10-29 ║ 150000 ║ 2013-10-30 ║ 11126.1 ║
║ 678 ║ 2006-02-09 ║ 467207.65 ║ NULL ║ NULL ║ NULL ║ NULL ║ NULL ║ NULL ║
╚═════════╩══════════════╩═══════════╩══════════════╩═══════════╩══════════════╩═══════════╩══════════════╩═══════════╝
忽略日期格式,將地雷設置為YYYY-MM-DD
。 它應該在您的計算機上顯示為DD/MM/YYYY
。
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