Average Computation Question

Jul 20, 2005

My table is laid out as such:

ID (int) What (varchar 20) TimeStamp (smalldatetime)
------- ------------- ---------------
73 Start <T1>
73 Misc <T2>
73 End <T3>
81 Start <T1'>
81 Misc <T2'>
81 End <T3'>
....

I need to calculate End - Start for each unique ID (i.e. T3-T1 and
T3'-T1') and then take the average of those (2 in this case) entries.

Any help is appreciated.

Alex.

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Feb 1, 2004

i am trying to set up a quick and dirty, but efficient way to calculate permutation and combination. anyone out there dealt with this?

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Feb 6, 2004

Please execute the script below to understand the problem -


---
create table test(id int, col1 int,col2 varchar(5),col3 datetime)
create table test2(id int, col1 int,col2 varchar(5),col3 datetime)

--id & col1 make up the PK.

insert test values(4,4,'d','02/06/2004')
insert test values(4,4,'e','02/06/2004')

insert test2 values(4,4,'d','02/06/2004')
insert test2 values(4,4,'e','02/06/2004')

select *
from test

select *
from test2

--The rows are identical.
--Script A

select t.*
from test t
join test2 t2 on t2.id=t.id
where CHECKSUM(t.col2,t.col3)<>CHECKSUM(t2.col2,t2.col3)

--The purpose of the above script is to check for any updates in the two tables. It returns two rows. But as you can see both these rows were present in the table before. So I modify the script to -
--SCRIPT B
select t.*
from test t
join test2 t2 on t2.col2=t.col2
where CHECKSUM(t.col3)<>CHECKSUM(t2.col3)

-- In this case no row is returned.This is exactly what I need. The problem - Now execute the script below.

TRUNCATE TABLE TEST
TRUNCATE TABLE TEST2

insert test values(4,4,'d','02/06/2004')
insert test values(4,4,'d','02/01/2004')

insert test2 values(4,4,'d','02/06/2004')
insert test2 values(4,4,'d','02/01/2004')

--Now when I execute script B two rows are returned which is not what I want. Since the rows are identical no row should be returned. So depending on what column changes (col2 or col3), I have to alter the script. I seek advise on the method to calculate checksum. Again the PK is ID and Col1 only.


Thanks



drop table test
drop table test2
go
--

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Mar 5, 2008

What is the equivalent in Transact SQL for VB.net ^ (Exponent Operator)

I have a following equation in VB.net
DotGain = ((1 - 10 ^(D0 - D50)) /(1 - 10 ^ (D0 - D100))) * 100 - 50
where D0, D50 and D100 are decimal variables


Working on creating a SQL UDF where @D0,@D50 and @D100 are transact sql decimal variables

DECLARE @DotGain decimal
DECLARE @D0 decimal
DECLARE @D50 decimal
DECLARE @D100 decimal

SET @D0 = 0.10
SET @D50 = 0.54
SET @D100 = 1.20

SELECT @DotGain = 1 - POWER(10,(@D0 - @D50)) / 1 - POWER(10,(@D0 - @D100)) * 100 - 50


but it is giving me different result in TSQL than VB2005

Can someone correct me?

Thanks in advance.

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Jun 21, 2015

Calculation of an average using DAX' AVERAGE and AVERAGEX.This is the manual calculation in DW, using SQL.In the tabular project (we're i've noticed that these 4 %'s are in itself strange), in a 1st moment i've noticed that i would have to divide by 100 to get the same values as in the DW, so i've used AVERAGEX:

Avg_AMP:=AVERAGEX('Fct Sales';'Fct Sales'[_AMP]/100)
Avg_AMPdollar:=AVERAGEX('Fct Sales';'Fct Sales'[_AMPdollar]/100)
Avg_FMP:=AVERAGEX('Fct Sales';'Fct Sales'[_FMP]/100)
Avg_FMPdollar:=AVERAGEX('Fct Sales';'Fct Sales'[_FMPdollar]/100)

The results were, respectively: 701,68; 2120,60...; -669,441; and  finally **-694,74** for Avg_FMPdollar.i can't understand the difference to SQL calculation, since calculations are similar to the other ones. After that i've tried:

test:=SUM([_FMPdollar])/countrows('Fct Sales') AND the value was EQUAL to SQL: -672,17
test2:=AVERAGE('Fct Sales'[_Frontend Margin Percent ACY]), and here, without dividing by 100 in the end, -696,74...

So, AVERAGE and AVERAGEX have a diferent behaviour from the SUM divided by COUNTROWS, and even more strange, test2 doesn't need the division by 100 to be similar to AVERAGEX result.

I even calculated the number of blanks and number of zeros on each column, could it be a difference on the denominator (so, a division by a diferente number of rows), but they are equal on each row.

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Feb 15, 2008

I have a temp_max column and a temp_min column with data for every day for 60 years. I want the average temp for jan of yr1 through yr60, averaged...
I.E. the avg temp for Jan of yr1 is 20 and the avg temp for Jan of yr2 is 30, then the overall average is 25.
The complexity lies within calculating a daily average by month, THEN a yearly average by month, in one statement.
?confused?

Here's the original query.
accept platformId CHAR format a6 prompt 'Enter Platform Id (capital letters in ''): '

SELECT name, country_cd from weather_station where platformId=&&platformId;

SELECT to_char(datetime,'MM') as MO, max(temp_max) as max_T, round(avg((temp_max+temp_min)/2),2) as avg_T, min(temp_min) as min_temTp, count(unique(to_char(datetime, 'yyyy'))) as TOTAL_YEARS
FROM daily
WHERE platformId=&&platformId and platformId = platformId and platformId = platformId and datetime=datetime and datetime=datetime
GROUP BY to_char(datetime,'MM')
ORDER BY to_char(datetime,'MM');

with a result of:

NAME_________________CO
-------------------- --
OFFUTT AFB___________US

MO______MAX_T _____AVG_T__MIN_TEMTP_TOTAL_YEARS
-- ---------- ---------- ---------- -----------
01_________21______-5.31________-30__________60
02_________26______-2.19______-28.3__________61
03_______31.1_______3.61______-26.1__________60
04_______35.6______11.07______-12.2__________60
05_______37.2_______17.2_______-3.3__________60
06_______41.1______22.44__________5__________60
07_______43.3______24.92________7.2__________60
08_______40.6______23.71________5.6__________60
09_________40______18.84_______-2.2__________59
10_______34.4_______12.5_______-8.9__________59
11_________29_______4.13______-23.9__________60
12_________21______-2.52______-28.3__________60

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Sep 26, 2007

Hello,I have two tables:[Posts] > PostId, ...[Ratings] > RatingId, PostId, RatingI want to select all posts and add a new column named AverageRating.This new column is the average of all ratings associated to that Post.If a post was not rated then its AverageRating would be NULL.How can I do this?Thanks,Miguel

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Apr 18, 2006

if I have a bunch of times, and want an average of them, how do I do that?

Thanks.

For more details, see this thread:

http://www.dbforums.com/showthread.php?t=1215633

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Jun 19, 2007

I am getting the number of transactions for two different months based on dates entered from the user. I need to display the number of transactions along with the average sale. I have figured out how to get the dates and sum the transactions but I can't seem to add in the average....

(@prevMonthStart datetime, @prevMonthEnd datetime, @thisMonthStart datetime, @thisMonthEnd datetime)

as

select sum(case when orders.orderdate between @prevMonthStart and @prevMonthEnd then 1 else 0 end ) as PrevMonthCount,

sum(case when orders.orderdate between @thisMonthStart and @thisMonthEnd then 1 else 0 end ) as ThisMonthCount

(how do I add in the average for both months? The column is orders.ordertotal)

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Jan 6, 2008

Using MS SQL 2005 server how can I get the average cost price of item 'shirt' from this table please?

code item description cost retail
---- ---- ----------- ---- ------
191 shirt shirt - white 2.30 9.99
170 pants pants - beige 6.34 15.00
196 shirt shirt - red 2.64 9.99
199 shirt shirt - blue 2.61 9.99

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Jan 19, 2008



Hi !

I am having this problem. I have a grouping someting like this.

Group1
Resolved Resolution Time Average Resolution Time
30 2904.46 96.82

54 1442.03 26.70

0 0.00 0.00
0 0.00 0.00





------------------------------
Avg : 30.88

Now to calculate the average inside the grouping I have used this


iif(Sum(Fields!ResolutionTime.Value) = 0 ,"0.00",(Sum(Fields!ResolutionTime.Value)/(iif(Count(Fields!ResolvedDate.Value)=0,1,Count(Fields!ResolvedDate.Value)))))

I am at a loss how to calculate the group footer (Result = 30.88 ) which is equal to (96.82 + 26.70 + 0 + 0 ) / 4 . This is the result from the existing Crystal report. I am trying to convert this report to reporting services. Now I cannot nest aggregate functions and also the row number can be dynamic I am confused how to resolve it.

Any ideas will be greatly appreciated.

Thanks in advance.

--Abbi.

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May 21, 2008

Hi All,

I was hoping someone could help me with pluging moving average into my report.


This is the template I am using for moving average:
//
/*Returns the average value of a member over a specified time interval.*/
CREATE MEMBER CURRENTCUBE.[MEASURES].[Moving Average]
AS Avg
(
[<<Target Dimension>>].[<<Target Hierarchy>>].CurrentMember.Lag(<<Periods to Lag>>) :
[<<Target Dimension>>].[<<Target Hierarchy>>].CurrentMember,
[Measures].[<<Target Measure>>]
)
// This calculation returns the average value of a member over the specified time interval.
FORMAT_STRING = "Standard";


This is what I have before I started to add the moving average. The report works but only displays the cummulative complexity rank.

WITH

MEMBER [Measures].[Date Key] AS

[Date].[Date].CurrentMember.UniqueName

SELECT

{

[Measures].[Date Key],

[Measures].[ComplexityRank]

} ON COLUMNS,

(

[Work Item].[System_State].[System_State],

(StrToMember(@StartDateParam):StrToMember(@EndDateParam))

)

ON ROWS

FROM [Team System]

WHERE

(

STRTOMEMBER("[Team Project].[Team Project].["+@Project+"]"),

STRTOSET(@IterationParam),

STRTOSET(@AreaParam),

STRTOSET(@WorkItemTypeParam)

)



What I want to do is also add the moving average for this over the parameter of Iterations. (IterationParam). This is what I have so far with the moving average in my report: I know I must have a lot of errors but I can't get past this first error. I highlighted the line with error. The error said: Query(7, 15) Parser: The syntax for '.' is incorrect. (msmgdsrv)


WITH

MEMBER

[Measures].[Date Key] AS

[Date].[Date].CurrentMember.UniqueName,

[Measures].[Moving Average] as

AVG({[Date].[Date].currentmember.lag(@IterationParam):

[Date].[Date].currentmember},[Measures].[ComplexityRank])



SELECT

{

{measures.[moving average],measures.[Internet Total Product Cost]} on 0,

[Date].[Date]. Members

[Measures].[Date Key],

[Measures].[ComplexityRank]

} ON COLUMNS,

(

[Work Item].[System_State].[System_State],

(StrToMember(@StartDateParam):StrToMember(@EndDateParam))

)

ON ROWS

FROM [Team System]

WHERE

(

STRTOMEMBER("[Team Project].[Team Project].["+@Project+"]"),

STRTOSET(@IterationParam),

STRTOSET(@AreaParam),

STRTOSET(@WorkItemTypeParam)




Does anyone have any suggestions?

Thanks,
Nici

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Example

Product Volume
Fish

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Hello all!This might be a newbie question, and there might be something Im just not thinking of right now, but I have a set of values that I need to get the average of but only from the middle 90%. Example:11 <-From here1234456 <- To here.7I thought I could solve it by subqueries and do the following:Select (((Select sum top 5 order asc) + (Select sum top 5 order desc)) - sum total)/rows*0.9 which would give me what I want, but I realised that when aggregating I cant order the subqueries.This is for an application (that will run the query on a sql-server) that only takes one query (although subqueries should be fine), and thats why I have a problem, I cant build any views or things like that.I guess my question is very simple: How can I get a sum of the bottom 5 percent without sorting descending?

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May 8, 2012

Select * from personnel

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Apr 9, 2008

Hi, I have two tables, Weekly and AverageEngTime. Weekly table has 14 columns, "Mon_Day,Mon_Night,Tue_day,....Sun_Night". AverageEngTime table has 15 columns, "Shifts,Mon_Day,Mon_Night,Tue_day,....Sun_Night". I have inserted "Average" as a value for column "Shifts" in AverageEngTime table. Now how do I find the average for each column in Weekly table and insert into AverageEngTime table in the respective columns, and in the row where Shifts = "Average".

I used the following codes to try but i receive errors at where statement.Please correct me. The expected output as below.

Shifts | Mon_day | Mon_Night | Tue_Day.....
Average | 5.2 | 10.2 | 15.2........

The codes that i tried..

declare @Weekday tinyint, @hour int
select @Weekday = datepart(dw,getdate()),@hour= datepart(hh,getdate())

if (@Weekday= 1 and (@hour>= 7 AND @hour<19))
begin
Insert Into AverageEngTime(Sat_Night) where Shifts = 'Average'
SELECT AVG(Sat_Night)
FROM Weekly
end

if ((@Weekday= 1 and @hour >= 19) OR (@Weekday = 2 and @hour < 7))
begin
Insert Into AverageEngTime(Sun_Day) where Shifts = 'Average'
SELECT AVG(Sun_Day)
FROM Weekly
end

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May 28, 2008

Problem

fldyear fldascending flddecending
2007 20 23
2006 21 14
2007 41 12
2007 12 5


how do i find the average of fld ascending and descending where year=2007

Your help will be appreciated

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May 22, 2006

Can anyone tell me how to calculate a moving average for the below table?
--------------------
MONS /vol /counter(the date)
jan/8 / 2006-01-01
feb/9 / etc.
........
oct/5 / etc.
nov/6 /
dec/7 /
--------------------- I am using the below code, but it is having no effect......
SELECT i1.MONS, i1.COUNTER,
( SELECT AVG( i2.VOL )
FROM #RES1 AS i2
WHERE i2.MONS = i1.MONS And
DATEDIFF( month , i2.COUNTER , i1.COUNTER ) Between 0 And 12
) AS MovingAverageOver12Months
FROM #RES1 AS i1
ORDER BY i1.COUNTER

thanks in advance, dirwin

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Feb 22, 2007

I made a code to in SQL reporting services for the reports of our company regarding the new applicants. Now I need to get the average datedifference in each phase from all applicants who entered Initial/Data Collection. Example, "Initial/Data collection"PHASE will have an average of 60 minutes to be finished, averaged from all 200 applicants, and "Screening"PHASE 240 minutes to be finished, averaged from 100 applicants.

All applicants must go through stage 1 before he can go to stage 2 and so on.

The date diff will be obtained from the "createdon" column subtracted to the last "modifiedon" column in each phase.

I need to insert that code to the existing code that I have if it is possible(which my boss prefer); or either if i can manipulate it in SQL reporting services in visual studio 2005.

Here is a sample output that I have.Each phase has a different color.


Here is the code that i used
SELECT subject, regardingobjectidname, createdon, modifiedon, stat, phase, initial,
(CASEphaseWHEN 'Initial/Data Collection' THEN 1
WHEN 'Screening' THEN 2
WHEN 'Assesment and Selection' THEN 3
WHEN 'Placement' THEN 4
END) AS Phasesort
FROM(
SELECT subject, regardingobjectidname, createdon, modifiedon, stat, initial,
(CASEstatWHEN 'Application Recieved' THEN 'Initial/Data Collection'
WHEN 'For Screening' THEN 'Screening'
WHEN 'Shortlisted' THEN 'Screening'
WHEN 'For Assesment' THEN 'Assesment and Selection'
WHEN 'For Assesment' THEN 'Assesment and Selection'
WHEN 'Passed Initial Interview' THEN 'Assesment and Selection'
WHEN 'Passed Profiles Assesment' THEN 'Assesment and Selection'
WHEN 'Passed Technical Exam' THEN 'Assesment and Selection'
WHEN 'For Placement' THEN 'Placement'
END) AS phase
FROM(
SELECT subject, regardingobjectidname, createdon, modifiedon, initial,
(CASEinitialWHEN '1 stage' THEN 'Application Recieved'
WHEN '2 stage' THEN 'Application Recieved'
WHEN '3 stage' THEN 'For Screening'
WHEN '4 stage' THEN 'Shortlisted'
WHEN '5 stage' THEN 'For Assesment'
WHEN '6 stage' THEN 'Passed Initial Interview'
WHEN '7 stage' THEN 'Passed Profiles Assesment'
WHEN '8 stage' THEN 'Passed Technical Exam'
WHEN '9 stage' THEN 'For Placement'
WHEN '10 stage' THEN 'For Placement'
END) AS stat
FROM(
SELECT subject, regardingobjectidname, createdon, modifiedon,
(CASEsubjectWHEN N'application received' THEN '1 stage'
WHEN 'process application' THEN '2 stage'
WHEN 'screen application' THEN '3 stage'
WHEN 'Phone interview' THEN '4 stage'
WHEN N'initial interview' THEN '5 stage'
WHEN 'profiles assessment' THEN '6 stage'
WHEN 'technical exam and interview' THEN '7 stage'
WHEN 'background and reference check' THEN '8 stage'
WHEN 'Job Offer' THEN '9 stage'
WHEN 'Contract Signing' THEN '10 stage'
END) AS initial
FROM(SELECT subject, regardingobjectidname, createdon, modifiedon
FROMFilteredTask
WHERE (subject IN ('application received', 'process application',
'screen application', 'initial interview', 'profiles assessment',
'technical exam and interview', 'background and reference check', 'job offer',
'contract signing'))
UNION ALL
SELECT subject, regardingobjectidname, createdon, modifiedon
FROMFilteredPhoneCall
WHEREsubject = 'phone interview'
) AS Orion
) AS Initials
) AS Phases
) AS Stats
ORDER BY regardingobjectidname, initial

I appreciate your help.

Thanks a lot.

__________________________________________________
Your future is made by the things you are presently doing.

Andrew

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Mar 31, 2008

Here's my sample formula:

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FROM dbo.TechPhonesCalibClient INNER JOIN
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I would like to get the average of column G_branded (Result from the above formula) Any idea?

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Jul 20, 2005

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Dec 12, 2007



Hello Sql Expert!

I am trying to create a query that i can use to find the Average Check for transactions sold with a particular product.

The sql table i'm working with looks like this

ORDERID PRODUCT PRICE COUNT PAID
00001 burger 1.00 1 1.00

00001 hotdog 2.00 2 4.00
00001 drink 1.00 1 1.00

00001 shake 2.00 1 2.00
00002 burger 1.00 2 2.00
00002 shake 2.00 5 10.00
00003 hotdog 2.00 1 2.00

I would like to create something that will give me the average check for every product

ex
PRODUCT AVG CHECK
burger 10
shake 10
hotdog 5
drink 8

I created a query that could give me the % of each product that are ordered alone. I tried modifying it to give me avg check but ran into problems because the when i use max(product) to aggergate the field, it uses the products with the highest first character in the alphabet thus it products with V's and Y's get a lot more results (

Is there an easy way to do this by creating a temp table or nested query?

I can create a nested query to give me the average check for only one product at a time. I'm looking for something that can group the average check by all product.

Any help would be greatly appreciated!

Thank you so much!

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May 13, 2008

Hi All,
I am trying to create a report that shows moving average. Well I found this template:

//
/*Returns the average value of a member over a specified time interval.*/
CREATE MEMBER CURRENTCUBE.[MEASURES].[Moving Average]
AS Avg
(
[<<Target Dimension>>].[<<Target Hierarchy>>].CurrentMember.Lag(<<Periods to Lag>>) :
[<<Target Dimension>>].[<<Target Hierarchy>>].CurrentMember,
[Measures].[<<Target Measure>>]
)

// This calculation returns the average value of a member over the specified time interval.
,
FORMAT_STRING = "Standard";


Only I do not have a specified interal or a constant number that I can place into

.Lag(<<Periods to Lag>>)
The report I have has a parameter that allows you to select a specific team project from a list. Although I have not figured out how to get the iteration paramter to update to only show the specified team project iterations, I want the graph to only show the iterations for that team project and the moving average (in the graph). The problem is that I can't just plug in the number 6 because different projects we have, have different numbers of iterations, and the user can pick any project from the list in the parameter.

Does anyone have suggestions on this?

Thanks!

-Nici


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Oct 12, 2007



Just want to gathr some ideas.I have a matrix where i retrieve Fields!Amount.I used the subtotal property to get the total amount per quarter.But how can i get the average of the 3 months.I tried using the Avg(Fields!Amount.Value) but it's results is unexpected or wrong.
________________________
| Avg(Fields!Amount.value) |
| Jan | Feb | March |
-------------------------------------------
| 0.1 | 0.2 | 0.2 |
| 0.3 | 0.1 | 0.5 |
SubTotal | 0.4 | 0.3 | 0.7 |

That is the design of my matrix.And other thing,it is dynamic,for example,There is a possibility that Feb could be absent.SO i cannot make Sum(Fields!Amount.Value) / 3. Dont know what to do for that.Why could Avg be wrong, correct me if im wrong,but as for what i know,i think the formula for Avg in my matrix is :

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Hope to hear from anyone out there..Thanks!!

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Jan 7, 2008



hi guys
I have a list of data, but I want to calculate the average.
for example

dh from depth bi
a 0 1 4.5
a 1 2 3.2

a 2 5 8.2
a 5 7 10.5

a 7 10 5
a 10 15 7.8

a 15 20 9.5
a 20 22 10.2
b 0 5 2.3
b 5 7 3.1
b 7 9 4.6
b 9 12.5 12
b 12.5 15 5.5
b 15 17 8.9
b 17 19 10

this means that for each interval I have a value in the field bi and I want to calculate an average for the total for each dh something like this for a group of values
dh bi
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b ((depth-from)* bi)/sum(depth-from)

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Feb 1, 2008

Hi,

Here is a part of result set.
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How can I get every other 5-minute average value?

id datetime value
------------------- ----------------------------- --------

0xC00302FD 2008-01-31 18:36:00 0.104
0xC00302FD 2008-01-31 18:37:00 0.104
0xC00302FD 2008-01-31 18:38:00 0.104
0xC00302FD 2008-01-31 18:39:00 0.104
0xC00302FD 2008-01-31 18:40:00 0.104
0xC00302FD 2008-01-31 18:41:00 0.104
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...

...
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May 15, 2008

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Description Amount Account Location Begin Balance


Test 1234 $100 0001 Las Vegas $5000
Test 2345 $50 0001 Las Vegas $5000
Test 3456 $80 0001 Phoenix $2000

What this is, is transactions and their amounts and account/location they went to. The last column is the beginning balance for the account/location combination. I only need the beginning balance once per account/location or averaged. So I need either this (beginning balance only shows once).....

Description Amount Account Location Begin Balance


Test 1234 $100 0001 Las Vegas $5000
Test 2345 $50 0001 Las Vegas $0
Test 3456 $80 0001 Phoenix $2000


or I need this (beginning balance is averaged)......

Description Amount Account Location Begin Balance


Test 1234 $100 0001 Las Vegas $2500
Test 2345 $50 0001 Las Vegas $2500
Test 3456 $80 0001 Phoenix $2000

That way I can do a sum on the beginning balance results in my report for the account/location combination, and do a sum on just account or just location while still having my transactions.

Is this possible?

Thanks,
Adam

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Does anyone know if it's possible to calculate weighted averages on report level, based on 2 items in the report?

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