Calling bteq from Powershell - powershell

Question

I currently generate a bat file that contains multiple BTEQ calls to execute a .btq script against a Teradata box, below is an example CMD call:
bteq <Bteq\"File_1.BTQ" >>bteq_output.txt 2>&1
The syntax as far as I understand it is:
> specifies the input file & >> specifies the output file
I am currently trying to convert the bat implementation to a PowerShell version however I get stuck with the following issue:
PS C:\...\Deploy.ps1:21 char:81
+ ... -Object { bteq < (Join-Path $deployDir $_) >> bteq_log.txt }
+ ~
The '<' operator is reserved for future use.
+ CategoryInfo : ParserError: (:) [],ParentContainsErrorRecordException
+ FullyQualifiedErrorId : RedirectionNotSupported
Which is the result of this call in my PowerShell script:
(Get-Content -Path $configFile) | Select-Object -Skip 1 | ForEach-Object { bteq.exe < (Join-Path $deployDir $_) >> bteq_output.txt }
It seems that the BTEQ command line syntax directly conflicts with the < operator in PowerShell.
EDIT
If I try to escape the < with ` then instead I am presented with the following error, as though the parameter is not picked up:
bteq.exe : *** Warning: You must log on before sending SQL requests.
At C:\...\Deploy.ps1:20 char:76
+ (Get-Content -Path $configFile) | Select-Object -Skip 1 | ForEach-Object { bteq. ...
+ ~~~~~
+ CategoryInfo : NotSpecified: ( *** Warning: Y... SQL requests. :String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
Anyone able to shed any light as to how one would call a bteq command in PowerShell when specifying the file to be used?

Answer 1

in powershell
try cat <your-bteq-file> | bteq to call your bteq file

Answer 2

You should be able to wrap the portion in your foreach into a script block and PowerShell will treat it as one command. You would just need to begin with the & symbol.
foreach { & {bteq.exe < (Join-Path $deployDir $_) >> bteq_output.txt} }
Not being at a machine to test this you might have to dynamically build the script block as a string so your variable is resolved correctly from the loop.

Answer 3

Prior to seeing the answer posted by Shailesh, I managed to get it working via a call to cmd as follows:
(Get-Content -Path $configFile)[1..$fileCount] | ForEach-Object {
cmd.exe /C ([String]::Concat(" bteq <", $deployDir, "`\""" , $_ , """ >>output.txt 2>&1"))
if($LASTEXITCODE -ne 0){
Write-Host "Error Code" $LASTEXITCODE
break
} else {
Write-Host "Completed" $_ ": Return code" $LASTEXITCODE
}
};
Here this set of statement iterates over the text read from the $configFile variable, and then makes a call to bteq for each one breaking if an error code is not equal to 0.