sql - SQL：将数字变基为 100

Question

我有以下查询：

 WITH CTE
AS (
    SELECT CASE 
            WHEN shareClassdata.valueDate IS NULL
                THEN NULL
            ELSE performanceData.valueDate
            END AS valueDate
        ,CASE 
            WHEN shareClassdata.benchmarkTypeName IS NULL
                THEN NULL
            ELSE performanceData.benchmarkTypeName
            END AS benchmarkTypeName
        ,CASE 
            WHEN shareClassdata.NAVLocal IS NULL
                THEN NULL
            ELSE performanceData.NAVLocal
            END AS NAVLocal
    FROM getPerformances(2, 12045, 0, 308, 31) AS performanceData
    LEFT JOIN (
        SELECT *
        FROM getPerformances(2, 12045, 0, 308, 31)
        ) shareClassdata ON shareClassdata.shareClassGroupId = performanceData.shareClassGroupId
        AND shareClassdata.currencyId = performanceData.currencyId
        AND shareClassdata.financialStructureGroupId = performanceData.financialStructureGroupId
        AND shareClassdata.valueDate = performanceData.valueDate
        AND shareClassdata.benchmarkTypeName = 'Fund'
    WHERE performanceData.shareClassGroupId = 22050
        AND performanceData.valueDate <= '2017-06-30 00:00:00.000'
        AND (
            isnull(performanceData.valueDate, '') <> ''
            AND (
                performanceData.benchmarkTypeName = 'Benchmark'
                OR performanceData.benchmarkTypeName = 'Fund'
                )
            )
    )
SELECT valueDate
    ,benchmarkTypeName
     ,NAVLocal
FROM CTE AS a
WHERE valueDate IS NOT NULL
    AND benchmarkTypeName IS NOT NULL

ORDER BY benchmarkTypeName ASC
    ,valueDate ASC

给出以下结果：

+------------+-------------------+---------------+
| valueDate  | benchmarkTypeName | NAVLocal      |
| 2016-11-30 | Benchmark         | 3005.96900000 |
| 2016-12-01 | Benchmark         | 2994.49800000 |
| 2016-12-02 | Benchmark         | 2981.91900000 |
| 2016-12-05 | Benchmark         | 2981.43800000 |
| 2016-12-07 | Benchmark         | 3020.05600000 |
| 2016-12-09 | Benchmark         | 3110.80600000 |
| 2016-12-12 | Benchmark         | 3086.44800000 |
| 2016-12-13 | Benchmark         | 3097.51400000 |
| 2016-12-14 | Benchmark         | 3069.05100000 |
| 2016-12-15 | Benchmark         | 3151.47600000 |
| 2016-12-16 | Benchmark         | 3147.68300000 |
| 2016-12-19 | Benchmark         | 3145.64400000 |
| 2016-12-20 | Benchmark         | 3175.35200000 |
| 2016-12-21 | Benchmark         | 3150.92500000 |
| 2016-12-22 | Benchmark         | 3138.26200000 |
| 2016-12-23 | Benchmark         | 3140.90700000 |
| 2016-12-28 | Benchmark         | 3142.34100000 |
| 2016-12-29 | Benchmark         | 3112.91600000 |
| 2016-12-30 | Benchmark         | 3081.54600000 |
| 2017-01-03 | Benchmark         | 3156.68300000 |
| 2017-01-04 | Benchmark         | 3147.51700000 |
| 2017-01-05 | Benchmark         | 3108.02700000 |
| 2017-01-09 | Benchmark         | 3121.82400000 |
| 2017-01-10 | Benchmark         | 3111.07500000 |
| 2017-01-11 | Benchmark         | 3156.88600000 |
| 2017-01-12 | Benchmark         | 3095.46800000 |
| 2017-01-13 | Benchmark         | 3109.50500000 |
| 2017-01-16 | Benchmark         | 3109.50500000 |
| 2017-01-17 | Benchmark         | 3080.41900000 |
| 2017-01-18 | Benchmark         | 3086.20700000 |
| 2017-01-19 | Benchmark         | 3098.86800000 |
| 2017-01-20 | Benchmark         | 3089.86100000 |
| 2017-01-23 | Benchmark         | 3062.10800000 |
| 2017-01-24 | Benchmark         | 3079.78000000 |
| 2017-01-25 | Benchmark         | 3108.25500000 |
| 2017-01-26 | Benchmark         | 3127.41500000 |
| 2017-01-27 | Benchmark         | 3114.02100000 |
| 2017-01-30 | Benchmark         | 3099.60200000 |
| 2017-01-31 | Benchmark         | 3063.61700000 |
| 2016-11-30 | Fund              | 280.77300000  |
| 2016-12-01 | Fund              | 279.07500000  |
| 2016-12-02 | Fund              | 278.43100000  |
| 2016-12-05 | Fund              | 279.70400000  |
| 2016-12-07 | Fund              | 284.04200000  |
| 2016-12-09 | Fund              | 290.47600000  |
| 2016-12-12 | Fund              | 289.81900000  |
| 2016-12-13 | Fund              | 292.15500000  |
| 2016-12-14 | Fund              | 290.95000000  |
| 2016-12-15 | Fund              | 291.62200000  |
| 2016-12-16 | Fund              | 292.25700000  |
| 2016-12-19 | Fund              | 293.07300000  |
| 2016-12-20 | Fund              | 294.23700000  |
| 2016-12-21 | Fund              | 293.81300000  |
| 2016-12-22 | Fund              | 292.81400000  |
| 2016-12-23 | Fund              | 293.08400000  |
| 2016-12-28 | Fund              | 294.89500000  |
| 2016-12-29 | Fund              | 294.22000000  |
| 2016-12-30 | Fund              | 295.24100000  |
| 2017-01-03 | Fund              | 296.37400000  |
| 2017-01-04 | Fund              | 294.59900000  |
| 2017-01-05 | Fund              | 295.30700000  |
| 2017-01-09 | Fund              | 294.18400000  |
| 2017-01-10 | Fund              | 294.42100000  |
| 2017-01-11 | Fund              | 294.96700000  |
| 2017-01-12 | Fund              | 293.68800000  |
| 2017-01-13 | Fund              | 295.94300000  |
| 2017-01-16 | Fund              | 294.73900000  |
| 2017-01-17 | Fund              | 294.24300000  |
| 2017-01-18 | Fund              | 295.48600000  |
| 2017-01-19 | Fund              | 294.83300000  |
| 2017-01-20 | Fund              | 294.29800000  |
| 2017-01-23 | Fund              | 293.80800000  |
| 2017-01-24 | Fund              | 294.64100000  |
| 2017-01-25 | Fund              | 296.76600000  |
| 2017-01-26 | Fund              | 297.37800000  |
| 2017-01-27 | Fund              | 297.26900000  |
| 2017-01-30 | Fund              | 294.67800000  |
| 2017-01-31 | Fund              | 292.99700000  |
+------------+-------------------+---------------+

我需要将第三列重新设置为 100，因此我编写了以下内容，它们完美地工作：

WITH CTE
AS (
    SELECT CASE 
            WHEN shareClassdata.valueDate IS NULL
                THEN NULL
            ELSE performanceData.valueDate
            END AS valueDate
        ,CASE 
            WHEN shareClassdata.benchmarkTypeName IS NULL
                THEN NULL
            ELSE performanceData.benchmarkTypeName
            END AS benchmarkTypeName
        ,CASE 
            WHEN shareClassdata.NAVLocal IS NULL
                THEN NULL
            ELSE performanceData.NAVLocal
            END AS NAVLocal
    FROM getPerformances(2, 12045, 0, 308, 31) AS performanceData
    LEFT JOIN (
        SELECT *
        FROM getPerformances(2, 12045, 0, 308, 31)
        ) shareClassdata ON shareClassdata.shareClassGroupId = performanceData.shareClassGroupId
        AND shareClassdata.currencyId = performanceData.currencyId
        AND shareClassdata.financialStructureGroupId = performanceData.financialStructureGroupId
        AND shareClassdata.valueDate = performanceData.valueDate
        AND shareClassdata.benchmarkTypeName = 'Fund'
    WHERE performanceData.shareClassGroupId = 22050
        AND performanceData.valueDate <= '2017-06-30 00:00:00.000'
        AND (
            isnull(performanceData.valueDate, '') <> ''
            AND (
                performanceData.benchmarkTypeName = 'Benchmark'
                OR performanceData.benchmarkTypeName = 'Fund'
                )
            )
    )
SELECT valueDate
    ,benchmarkTypeName
    ,(
        sum(a.NAVLocal) / (
            SELECT TOP 1 b.NAVLocal
            FROM CTE AS b
            WHERE b.NAVLocal != 0
                AND a.benchmarkTypeName = b.benchmarkTypeName
            ORDER BY b.valueDate ASC
            )
        ) * 100 AS NAVLocal
FROM CTE AS a
WHERE valueDate IS NOT NULL
    AND benchmarkTypeName IS NOT NULL
GROUP BY valueDate
    ,benchmarkTypeName
ORDER BY benchmarkTypeName ASC
    ,valueDate ASC

它给出了以下结果（注意：NAVLocal 列只是为了向您显示旧值与先前值）：

+------------+-------------------+----------+------------------+
| valueDate  | benchmarkTypeName | NAVLocal | NAVLocal rebased |
| 2016-11-30 | Benchmark         | 3005.969 | 100              |
| 2016-12-01 | Benchmark         | 2994.498 | 99.6183          |
| 2016-12-02 | Benchmark         | 2981.919 | 99.1999          |
| 2016-12-05 | Benchmark         | 2981.438 | 99.1839          |
| 2016-12-07 | Benchmark         | 3020.056 | 100.4686         |
| 2016-12-09 | Benchmark         | 3110.806 | 103.4876         |
| 2016-12-12 | Benchmark         | 3086.448 | 102.6773         |
| 2016-12-13 | Benchmark         | 3097.514 | 103.0454         |
| 2016-12-14 | Benchmark         | 3069.051 | 102.0985         |
| 2016-12-15 | Benchmark         | 3151.476 | 104.8406         |
| 2016-12-16 | Benchmark         | 3147.683 | 104.7144         |
| 2016-12-19 | Benchmark         | 3145.644 | 104.6465         |
| 2016-12-20 | Benchmark         | 3175.352 | 105.6348         |
| 2016-12-21 | Benchmark         | 3150.925 | 104.8222         |
| 2016-12-22 | Benchmark         | 3138.262 | 104.401          |
| 2016-12-23 | Benchmark         | 3140.907 | 104.489          |
| 2016-12-28 | Benchmark         | 3142.341 | 104.5367         |
| 2016-12-29 | Benchmark         | 3112.916 | 103.5578         |
| 2016-12-30 | Benchmark         | 3081.546 | 102.5142         |
| 2017-01-03 | Benchmark         | 3156.683 | 105.0138         |
| 2017-01-04 | Benchmark         | 3147.517 | 104.7088         |
| 2017-01-05 | Benchmark         | 3108.027 | 103.3951         |
| 2017-01-09 | Benchmark         | 3121.824 | 103.8541         |
| 2017-01-10 | Benchmark         | 3111.075 | 103.4965         |
| 2017-01-11 | Benchmark         | 3156.886 | 105.0205         |
| 2017-01-12 | Benchmark         | 3095.468 | 102.9773         |
| 2017-01-13 | Benchmark         | 3109.505 | 103.4443         |
| 2017-01-16 | Benchmark         | 3109.505 | 103.4443         |
| 2017-01-17 | Benchmark         | 3080.419 | 102.4767         |
| 2017-01-18 | Benchmark         | 3086.207 | 102.6692         |
| 2017-01-19 | Benchmark         | 3098.868 | 103.0904         |
| 2017-01-20 | Benchmark         | 3089.861 | 102.7908         |
| 2017-01-23 | Benchmark         | 3062.108 | 101.8675         |
| 2017-01-24 | Benchmark         | 3079.78  | 102.4554         |
| 2017-01-25 | Benchmark         | 3108.255 | 103.4027         |
| 2017-01-26 | Benchmark         | 3127.415 | 104.0401         |
| 2017-01-27 | Benchmark         | 3114.021 | 103.5945         |
| 2017-01-30 | Benchmark         | 3099.602 | 103.1149         |
| 2017-01-31 | Benchmark         | 3063.617 | 101.9177         |
| 2016-11-30 | Fund              | 280.773  | 100              |
| 2016-12-01 | Fund              | 279.075  | 99.3952          |
| 2016-12-02 | Fund              | 278.431  | 99.1658          |
| 2016-12-05 | Fund              | 279.704  | 99.6192          |
| 2016-12-07 | Fund              | 284.042  | 101.1642         |
| 2016-12-09 | Fund              | 290.476  | 103.4558         |
| 2016-12-12 | Fund              | 289.819  | 103.2218         |
| 2016-12-13 | Fund              | 292.155  | 104.0538         |
| 2016-12-14 | Fund              | 290.95   | 103.6246         |
| 2016-12-15 | Fund              | 291.622  | 103.8639         |
| 2016-12-16 | Fund              | 292.257  | 104.0901         |
| 2016-12-19 | Fund              | 293.073  | 104.3807         |
| 2016-12-20 | Fund              | 294.237  | 104.7953         |
| 2016-12-21 | Fund              | 293.813  | 104.6443         |
| 2016-12-22 | Fund              | 292.814  | 104.2885         |
| 2016-12-23 | Fund              | 293.084  | 104.3846         |
| 2016-12-28 | Fund              | 294.895  | 105.0296         |
| 2016-12-29 | Fund              | 294.22   | 104.7892         |
| 2016-12-30 | Fund              | 295.241  | 105.1529         |
| 2017-01-03 | Fund              | 296.374  | 105.5564         |
| 2017-01-04 | Fund              | 294.599  | 104.9242         |
| 2017-01-05 | Fund              | 295.307  | 105.1764         |
| 2017-01-09 | Fund              | 294.184  | 104.7764         |
| 2017-01-10 | Fund              | 294.421  | 104.8608         |
| 2017-01-11 | Fund              | 294.967  | 105.0553         |
| 2017-01-12 | Fund              | 293.688  | 104.5998         |
| 2017-01-13 | Fund              | 295.943  | 105.4029         |
| 2017-01-16 | Fund              | 294.739  | 104.9741         |
| 2017-01-17 | Fund              | 294.243  | 104.7974         |
| 2017-01-18 | Fund              | 295.486  | 105.2401         |
| 2017-01-19 | Fund              | 294.833  | 105.0076         |
| 2017-01-20 | Fund              | 294.298  | 104.817          |
| 2017-01-23 | Fund              | 293.808  | 104.6425         |
| 2017-01-24 | Fund              | 294.641  | 104.9392         |
| 2017-01-25 | Fund              | 296.766  | 105.696          |
| 2017-01-26 | Fund              | 297.378  | 105.914          |
| 2017-01-27 | Fund              | 297.269  | 105.8752         |
| 2017-01-30 | Fund              | 294.678  | 104.9523         |
| 2017-01-31 | Fund              | 292.997  | 104.3536         |
+------------+-------------------+----------+------------------+

但是，查询在大型数据集上运行非常非常缓慢。有没有更好的方法来执行这个计算？

关于变基数字的提醒：
对于每个系列的基准，结果按起息日升序排序。最重要的值是每个系列的最旧记录。该系列的每个NAV值除以最旧的NAV，乘以100

您可以使用公式 https://docs.google.com/spreadsheets/d/1esChCFPTLa9df3xWuLmT5-JONsS8j8vTZpAjsx7fb9M/edit?usp=sharing访问此电子表格

谢谢

score 3 · Accepted Answer

窗口函数可能有助于提高性能，我从第一个输出开始，但您应该了解如何使用窗口函数来实现它

USE
tempdb
GO

DROP TABLE IF EXISTS Rebase;
CREATE TABLE Rebase(
   valueDate         DATE  NOT NULL
  ,benchmarkTypeName VARCHAR(9) NOT NULL
  ,NAVLocal          NUMERIC(8,3) NOT NULL
);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-11-30','Benchmark',3005.969);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-01','Benchmark',2994.498);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-02','Benchmark',2981.919);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-05','Benchmark',2981.438);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-07','Benchmark',3020.056);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-09','Benchmark',3110.806);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-12','Benchmark',3086.448);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-13','Benchmark',3097.514);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-14','Benchmark',3069.051);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-15','Benchmark',3151.476);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-16','Benchmark',3147.683);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-19','Benchmark',3145.644);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-20','Benchmark',3175.352);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-21','Benchmark',3150.925);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-22','Benchmark',3138.262);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-23','Benchmark',3140.907);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-28','Benchmark',3142.341);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-29','Benchmark',3112.916);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-30','Benchmark',3081.546);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-03','Benchmark',3156.683);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-04','Benchmark',3147.517);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-05','Benchmark',3108.027);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-09','Benchmark',3121.824);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-10','Benchmark',3111.075);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-11','Benchmark',3156.886);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-12','Benchmark',3095.468);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-13','Benchmark',3109.505);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-16','Benchmark',3109.505);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-17','Benchmark',3080.419);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-18','Benchmark',3086.207);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-19','Benchmark',3098.868);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-20','Benchmark',3089.861);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-23','Benchmark',3062.108);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-24','Benchmark',3079.78);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-25','Benchmark',3108.255);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-26','Benchmark',3127.415);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-27','Benchmark',3114.021);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-30','Benchmark',3099.602);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-31','Benchmark',3063.617);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-11-30','Fund',280.773);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-01','Fund',279.075);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-02','Fund',278.431);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-05','Fund',279.704);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-07','Fund',284.042);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-09','Fund',290.476);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-12','Fund',289.819);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-13','Fund',292.155);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-14','Fund',290.95);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-15','Fund',291.622);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-16','Fund',292.257);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-19','Fund',293.073);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-20','Fund',294.237);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-21','Fund',293.813);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-22','Fund',292.814);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-23','Fund',293.084);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-28','Fund',294.895);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-29','Fund',294.22);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2016-12-30','Fund',295.241);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-03','Fund',296.374);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-04','Fund',294.599);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-05','Fund',295.307);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-09','Fund',294.184);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-10','Fund',294.421);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-11','Fund',294.967);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-12','Fund',293.688);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-13','Fund',295.943);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-16','Fund',294.739);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-17','Fund',294.243);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-18','Fund',295.486);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-19','Fund',294.833);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-20','Fund',294.298);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-23','Fund',293.808);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-24','Fund',294.641);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-25','Fund',296.766);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-26','Fund',297.378);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-27','Fund',297.269);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-30','Fund',294.678);
INSERT INTO Rebase(valueDate,benchmarkTypeName,NAVLocal) VALUES ('2017-01-31','Fund',292.997);


SELECT
    valueDate
,   benchmarkTypeName
,   NAVLocal
,   FIRST_VALUE(NAVLocal) OVER(PARTITION BY benchmarkTypeName ORDER BY valueDate) AS Oldest
,   (NAVLOCAL / FIRST_VALUE(NAVLocal) OVER(PARTITION BY benchmarkTypeName ORDER BY valueDate)) * 100 aS RebaseValue

FROM
    Rebase

sql - SQL：将数字变基为 100

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