可以在不定义特定文件名的情况下使用Import-CSV cmd？

Question

So in my current scenario I am moving a .csv file to a location where I want to execute a script to parse the .csv, removing specific data, and creating a new file with only that extracted data.

My code is fine and its all working as I want.

However now I'm running through another set of UAT while using data files from production. These .csv files come to us each day, datestamped.

I've written my script initially with a text.csv, and wish to automate this script on a schedule. However now looks I need to define the csv file each time? This is not feasible.

Is it possible to use the import-csv cmdlet to have it just load the csv file it sees in the folder?

Here is my code

Import-Csv "\\pg-app05\Micros\Scripted Data Extraction\Sales\" |Where 
{$_.SITEID -like "7*"} | Select 
SITEID,DATE,REVENUECENTER,OVERGROUP,UNITS,PRICE,NETT,VATRATE,VAT,GROSS | 
ConvertTo-CSV -NoTypeInformation | % {$_ -replace '"',""} |Out-File "\\pg-
app05\Micros\Scripted Data Extraction\Sales\sales_$(get-date -f 
yyyy_MM_dd)_NI.csv" -fo -en ascii

This is returning an error, even with just one CSV file in the folder. SALES_27062017_090019.csv

There should only ever be one file present here, so wondering if its possible to have powershell just load the csv file, regardless of the filenamebeing defined?

I've tried

Import-Csv "\\pg-app05\Micros\Scripted Data Extraction\Sales\*.csv"

And while it gave me a generated output file, was nothing in it.

Answer 1

I think you could do:

(Get-ChildItem "\\pg-app05\Micros\Scripted Data Extraction\Sales\*.csv").FullName | Import-Csv

Because Get-ChildItem accepts wildcard parameters for its -Path parameter.

Your attempt of:

Import-Csv "\\pg-app05\Micros\Scripted Data Extraction\Sales\*.csv"

Doesn't work because the -Path parameter of Import-CSV does not accept wildcard characters.

If you want to make sure you only ever get 1 CSV returned you could do:

(Get-ChildItem "\\pg-app05\Micros\Scripted Data Extraction\Sales\*.csv" | Select -First 1).FullName | Import-Csv

Answer 2

Import-CSV can , in fact, handle importing from multiple CSVs, but does not have any wildcard processing. So, you need to generate the list of CSVs - which may include only a single CSV - some other way:

Import-CSV ((Get-ChildItem -Path "\\pg-app05\Micros\Scripted Data Extraction\Sales\*.csv").FullName)

should work, as should the solution proposed by @MarkWragg

Answer 3

Thanks for the replies guys, appreciate the help.

So here is my final cut that is achieving what I want

(Get-ChildItem "\\pg-app05\Micros\Scripted Data 
Extraction\Sales\*.csv").FullName | Import-Csv |Where {$_.SITEID -like "7*"} 
| Select 
SITEID,DATE,REVENUECENTER,OVERGROUP,UNITS,PRICE,NETT,VATRATE,VAT,GROSS | 
ConvertTo-CSV -NoTypeInformation | % {$_ -replace '"',""} |Out-File "\\pg-
app05\Micros\Scripted Data Extraction\Sales\sales_$(get-date -f 
yyyy_MM_dd)_NI.csv" -fo -en ascii

I'm now getting a generated outfile that contains the parsed data I need. On with more testing!