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TSQL Question

Posted on 2014-04-25
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Last Modified: 2015-06-15
Hello

There is table that stores metric specific to the combination of account and product, period. The data is appended to the table  with time stamp (last column)
Now how do I do something in TSQL  - for each combination of account, product, period – get me the difference of metric1 of 5 jan to metric 1 of 1 jan. Please look excel

Thank you
eu-qestion.xlsx
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Question by:Rayne
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Assisted Solution

by:PortletPaul
PortletPaul earned 500 total points
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This result:
| ACCOUNT | PRODUCT | PERIOD | DIFF_METRIC1 | DIFF_METRIC2 | DIFF_METRIC3 | DIFF_METRIC4 |
|---------|---------|--------|--------------|--------------|--------------|--------------|
|     pl1 |      B1 |     p1 |           32 |          -32 |           -1 |           42 |
|     pl1 |      B1 |     p2 |           14 |          -34 |           32 |           26 |
|     pl1 |      B1 |     p3 |           37 |           20 |          -23 |           -7 |
|     pl1 |      B1 |     p4 |          -15 |          -38 |          -27 |           -4 |
|     pl1 |      B1 |     p5 |          -34 |           11 |           -6 |           39 |
|     pl1 |      B1 |     p6 |          -21 |           21 |           36 |           -6 |
|     pl1 |      B1 |     p7 |          -11 |           -6 |          -36 |          -16 |
|     pl1 |      B1 |     p8 |           -1 |           23 |           35 |           38 |
|     pl1 |      B1 |     p9 |           -2 |           29 |           11 |            0 |
|     pl1 |      B1 |    p10 |           19 |            3 |           37 |            6 |
|     pl1 |      B1 |    p11 |           33 |           15 |           39 |           30 |
|     pl1 |      B1 |    p12 |            7 |           13 |           22 |           -2 |

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from this query:
SELECT
        recent.account
      , recent.product
      , recent.period
      , prev.metric1 - recent.metric1 AS diff_metric1
      , prev.metric2 - recent.metric2 AS diff_metric2
      , prev.metric3 - recent.metric3 AS diff_metric3
      , prev.metric4 - recent.metric4 AS diff_metric4
FROM (SELECT *
      FROM table1
      WHERE DateOfUpload = '20140101'
     ) AS prev
JOIN (SELECT *
      FROM table1
      WHERE DateOfUpload = '20140105'
     ) AS recent
       ON prev.account = recent.account
      AND prev.product = recent.product
      AND prev.period = recent.period
;


data:


CREATE TABLE Table1
	([account] varchar(3), [product] varchar(2), [Period] varchar(3), [Metric1] int, [metric2] int, [metric3] int, [metric4] int, [DateOfUpload] datetime)
;
	
INSERT INTO Table1
	([account], [product], [Period], [Metric1], [metric2], [metric3], [metric4], [DateOfUpload])
VALUES
	('pl1', 'B1', 'p1', 56, 11, 34, 45, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p2', 45, 10, 35, 40, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p3', 45, 42, 20, 26, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p4', 25, 12, 19, 10, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p5', 1, 34, 9, 40, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p6', 6, 34, 39, 44, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p7', 18, 15, 9, 16, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p8', 9, 49, 44, 47, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p9', 8, 35, 19, 40, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p10', 36, 5, 44, 29, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p11', 37, 48, 46, 47, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p12', 32, 28, 49, 16, '2014-01-01 00:00:00'),
	('pl1', 'B1', 'p1', 24, 43, 35, 3, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p2', 31, 44, 3, 14, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p3', 8, 22, 43, 33, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p4', 40, 50, 46, 14, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p5', 35, 23, 15, 1, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p6', 27, 13, 3, 50, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p7', 29, 21, 45, 32, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p8', 10, 26, 9, 9, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p9', 10, 6, 8, 40, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p10', 17, 2, 7, 23, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p11', 4, 33, 7, 17, '2014-01-05 00:00:00'),
	('pl1', 'B1', 'p12', 25, 15, 27, 18, '2014-01-05 00:00:00')
;

http://sqlfiddle.com/#!3/129e4/4

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LVL 48

Accepted Solution

by:
PortletPaul earned 500 total points
Comment Utility
if you need parameters too, then it would like something like this:
DECLARE @prev AS datetime, @recent AS datetime
SET @prev = '20140101'
SET @recent = '20140105'

SELECT
        recent.account
      , recent.product
      , recent.period
      , prev.metric1 - recent.metric1 AS diff_metric1
      , prev.metric2 - recent.metric2 AS diff_metric2
      , prev.metric3 - recent.metric3 AS diff_metric3
      , prev.metric4 - recent.metric4 AS diff_metric4
FROM (SELECT *
      FROM table1
      WHERE DateOfUpload = @prev
     ) AS prev
JOIN (SELECT *
      FROM table1
      WHERE DateOfUpload = @recent
     ) AS recent
       ON prev.account = recent.account
      AND prev.product = recent.product
      AND prev.period = recent.period
;

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Author Comment

by:Rayne
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Portlet Paul,

You are my life saver, thank you again. You have jumped in to help several times before as well.

Thank you Sire :)
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by:Rayne
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this is awesome, thank you again. I was stuck in a mud slide :(
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by:PortletPaul
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:) thank you, it's my pleasure. Cheers, Paul
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Author Comment

by:Rayne
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Thanks again Paul, this again helped after 1 year AGAIN :)
You rock
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by:PortletPaul
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:) too kind. All the best, Paul
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