Azure synapse deployment failing - powershell

Question

I am trying to deploy SQL files to an Azure Synapse Analytics dedicated SQL pools using PowerShell script in an Azure Devops pipeline.
I have a folder with SQL files and after defining array of files I am trying to run foreach loop for array and trying to Invoke-Sqlcmd to deploy files but first SQL file get deployed (object is created) and then I get error:
Msg 104309, Level 16, State 1, Line 1 There are no batches in the
input script.
Below is my piece of code:
$files='$(Build.SourcesDirectory)\folder1\'
foreach ($s in $files)
{
Invoke-sqlcmd -ServerInstance $(server) -Database $(db) -InputFile $s -Credential $(cred)}

Answer 1

Azure Synapse Analytics dedicated SQL pools scripts are sensitive to empty batches, eg this script would generate the same error:
Msg 104309, Level 16, State 1, Line 1 There are no batches in the
input script.
-- xx
GO
However the truth is you get the same error in Synapse Studio and SQL Server Management Studio (SSMS), so I suggest you run through your scripts and use the Parse button (Ctrl+F5) in SSMS, which parses the script but does not execute it. This will help you track down your error:
In summary don't have batches that don't do anything.
I was able to get a simple local example added by including dir and using the FullName method to get the full path:
$files = dir "D:\temp\Powershell\*.sql"
foreach ($s in $files) {
#$s.Name
Invoke-Sqlcmd -ServerInstance '.\sql2019x' -Database 'tempdb' -InputFile $s.FullName
}