I have the following query :
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
Giving the following result :
+------------+-------------------+---------------+
| 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 |
+------------+-------------------+---------------+
I need to rebase the third column to 100 so i wrote the following which work perfectly :
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
it gives the following result ( note : the column NAVLocal is just there to show you the old vs previous value ) :
+------------+-------------------+----------+------------------+
| 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 |
+------------+-------------------+----------+------------------+
However the query is running very very very slow on a large dataset. Do there is a better way to perform this calculation ?
A reminder about rebasing numbers :
For each series of benchmark, the result is sorted ascending on the value date.The most important value is the oldest record of each serie. Each NAV value of the serie is divided by the oldest NAV, multiply by 100
You can access this spreadsheet with the formula https://docs.google.com/spreadsheets/d/1esChCFPTLa9df3xWuLmT5-JONsS8j8vTZpAjsx7fb9M/edit?usp=sharing
Thank you
Window functions may help improve the performance, I am starting from the first output but you should get the idea of how it can be achieved with a window function
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