SQL Clone
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


Running Total


Running Total

Author
Message
a4apple
a4apple
SSC Veteran
SSC Veteran (256 reputation)SSC Veteran (256 reputation)SSC Veteran (256 reputation)SSC Veteran (256 reputation)SSC Veteran (256 reputation)SSC Veteran (256 reputation)SSC Veteran (256 reputation)SSC Veteran (256 reputation)

Group: General Forum Members
Points: 256 Visits: 406
refer to this post...

http://sqlsaga.com/sql-server/how-to-calculate-running-totals-in-sql-server/

step by step explained...

Good Luck Smile .. Visit www.sqlsaga.com for more t-sql code snippets and BI related how to articles.
Jeff Moden
Jeff Moden
SSC Guru
SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)

Group: General Forum Members
Points: 85001 Visits: 41072
Ford Fairlane (1/15/2014)
Refined and resolved !!!

Thanks for all your input.

This is the working query.

SELECT
YEAR(CAST (a.ENDDATE AS DATETIME)),
MONTH(CAST (a.ENDDATE AS DATETIME)),
(

SELECT
SUM(b.DEPTH)

FROM
HOLELOCATION b

WHERE
b.HOLEID LIKE 'RHRC%'
AND ( CAST(YEAR(CAST(b.ENDDATE AS DATETIME)) AS VARCHAR) + RIGHT('00'+ CAST( MONTH(CAST (b.ENDDATE AS DATETIME)) AS VARCHAR(2)),2)) <= ( CAST(YEAR(CAST(a.ENDDATE AS DATETIME)) AS VARCHAR) + RIGHT('00'+ CAST( MONTH(CAST (a.ENDDATE AS DATETIME)) AS VARCHAR(2)),2))
AND YEAR(CAST (b.ENDDATE AS DATETIME)) IS NOT NULL AND MONTH(CAST (b.ENDDATE AS DATETIME)) IS NOT NULL

) AS DEPTH

FROM
HOLELOCATION a

WHERE a.HOLEID LIKE 'RHRC%' AND a.ENDDATE IS NOT NULL

GROUP BY
YEAR(CAST (a.ENDDATE AS DATETIME)),
MONTH(CAST (a.ENDDATE AS DATETIME))

ORDER BY
YEAR(CAST (a.ENDDATE AS DATETIME)) ASC,
MONTH(CAST (a.ENDDATE AS DATETIME)) ASC


That will certainly work but be advised that it's not scalable. If you end up with a not so large number of rows, it will eat the face off your server because it uses a thing known as a "Triangular Join", which is about half as bad as a full Cartesian Join (also known as a "Square Join").

Please see the following article on Triangular Joins.
http://www.sqlservercentral.com/articles/T-SQL/61539/

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
Jeff Moden
Jeff Moden
SSC Guru
SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)

Group: General Forum Members
Points: 85001 Visits: 41072
a4apple (1/17/2014)
refer to this post...

http://sqlsaga.com/sql-server/how-to-calculate-running-totals-in-sql-server/

step by step explained...


Same thing there. It's a Triangular Join. No matter what, it will always use more resources than you could possibly imagine. In pre-2012 SQL Server, it's far better to learn how to use a "Quirky Update" correctly. If you take exception to that unsupported method, then write a Cursor or While loop to do the running total. See the following URL for more on the problems with Triangular Joins.
http://www.sqlservercentral.com/articles/T-SQL/61539/

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
pietlinden
pietlinden
SSCarpal Tunnel
SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)

Group: General Forum Members
Points: 4797 Visits: 13135
Is the same true if you use a common table expression to calculate the running total?
Jeff Moden
Jeff Moden
SSC Guru
SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)

Group: General Forum Members
Points: 85001 Visits: 41072
pietlinden (1/18/2014)
Is the same true if you use a common table expression to calculate the running total?


Yes except that it's likely that the CTE will use more reads than a Cursor or While Loop. ;-)

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
Ford Fairlane
Ford Fairlane
SSCrazy
SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)

Group: General Forum Members
Points: 2196 Visits: 836
Thanks for the heads up Jeff, how would you tackle it then ?

Hope this helps...

Ford Fairlane
Rock and Roll Detective





patrickmcginnis59 10839
patrickmcginnis59 10839
SSCommitted
SSCommitted (1.7K reputation)SSCommitted (1.7K reputation)SSCommitted (1.7K reputation)SSCommitted (1.7K reputation)SSCommitted (1.7K reputation)SSCommitted (1.7K reputation)SSCommitted (1.7K reputation)SSCommitted (1.7K reputation)

Group: General Forum Members
Points: 1737 Visits: 5486
Awesome link here discussing various methods:

http://stackoverflow.com/questions/11310877/calculate-running-total-running-balance

to properly post on a forum:
http://www.sqlservercentral.com/articles/61537/
ChrisM@Work
ChrisM@Work
SSCoach
SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)

Group: General Forum Members
Points: 16065 Visits: 19530
Ford Fairlane (1/19/2014)
Thanks for the heads up Jeff, how would you tackle it then ?


Start by reducing the noise to see what's going on:
SELECT
x.YearMonth,
[DEPTH] = (
SELECT
SUM(b.DEPTH)
FROM HOLELOCATION b
CROSS APPLY (SELECT [YearMonth] = CONVERT(CHAR(6),CAST(b.ENDDATE AS DATETIME), 112)) x2
WHERE b.HOLEID LIKE 'RHRC%'
AND x2.YearMonth <= x.YearMonth
)
FROM HOLELOCATION a
CROSS APPLY (SELECT [YearMonth] = CONVERT(CHAR(6),CAST(a.ENDDATE AS DATETIME), 112)) x
WHERE a.HOLEID LIKE 'RHRC%'
AND x.YearMonth IS NOT NULL
GROUP BY x.YearMonth
ORDER BY x.YearMonth



“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden
Exploring Recursive CTEs by Example Dwain Camps
Jeff Moden
Jeff Moden
SSC Guru
SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)SSC Guru (85K reputation)

Group: General Forum Members
Points: 85001 Visits: 41072
Ford Fairlane (1/19/2014)
Thanks for the heads up Jeff, how would you tackle it then ?


I use the Quirky Update method and will probably continue to do so even after my company upgrades to 2012 and then to 2014. It's not for the faint of heart and there are a shedload of rules to follow but, for the size of the tables I used it for, it was worth it. It'll do a running total on a million row table (comparatively small nowadays) in just a couple of seconds even if you use the more complicated version with built in "sort order verification".

As an alternative, if the table that you need running totals for is a WORM table (write once, read many... like a check book where corrections are added in as additional transactions) AND you don't mind storing the running total, it might be better to use a trigger or some other code to calculate the running totals just for the new rows based on the previous maximum record.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
Ford Fairlane
Ford Fairlane
SSCrazy
SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)

Group: General Forum Members
Points: 2196 Visits: 836
Thanks Jeff, appreciate the advice.

Hope this helps...

Ford Fairlane
Rock and Roll Detective





Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum

































































































































































SQLServerCentral


Search