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# Powershell aggregation of varying CSV Files to one CSV

Posted on 2010-08-17
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Hi,
I have a daily CSV File that is created but it content changes daily, it is basicly a mail count result.
I want to aggregate the CSV's that are created daily into one file weekly.

file on Sunday would look like this:

Alias, Count
Kevin,1
Jim,2
Roki,1

The file on monday would be :
Alias, Count
Roger,1
Jim, 4
Ralph,1

the weekly aggregated file would have need to look like this (note Jim with 6 mails as an aggregated count):
Alias, Count
Jim, 6
Kevin,1
Ralph,1
Roger,1
roki,1

I know how to aggregate  CSV's but how'd it be done powershell with files that change...
Thanks!
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Accepted Solution

soostibi earned 500 total points
ID: 33452891
I would do this, assuming the files are agg1.txt, agg2.txt, etc. You can adjust the get-item part according to the actual filenames and path:
Get-Item c:\ee\agg*.txt | Import-Csv | Group-Object -Property alias |
Select-Object name,  @{n="sum"; e={(\$_.group | Measure-Object -Property count -Sum).sum}}

0

Author Comment

ID: 33453001
That works... its simple suddnly when its just writen like that :)
Thanks!!
0

Author Closing Comment

ID: 33453004
Thanks!
0

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