Resume On Error for Powershell - powershell

Question

I have the following foreach loop in a powershell script:
foreach ($sqlScript in Get-ChildItem -path "$pathToScripts" -Filter *.sql | sort-object) {
Write-Host "Running Script " $sqlScript.Name
#Execute the query
switch ($removeComments) {
$true {
(Get-Content $sqlScript.FullName -Encoding UTF8 | Out-String) -replace '(?s)/\*.*?\*/', " " -split '\r?\n\s*go\s*\r\n?' -notmatch '^\s*$' |
ForEach-Object { $SqlCmd.CommandText = $_.Trim(); $reader = $SqlCmd.ExecuteNonQuery() }
}
$false {
(Get-Content $sqlScript.FullName -Encoding UTF8 | Out-String) -split '\r?\n\s*go\s*\r\n?' -notmatch '^\s*$' |
ForEach-Object { $SqlCmd.CommandText = $_.Trim(); $reader = $SqlCmd.ExecuteNonQuery() }
}
}
}
The entire script is wrapped with a catch/try block and works OK for errors.
I now have a requirement that if one of the files(scripts) produces an error, the loop will ignore that and move on to the next file.
Could I do this with nested catch try blocks or is there a way to resume the loop on an error?

Answer 1

Adding an additional Try..Catch would probably be the way to go. For example you could modify your ForEach-Object blocks as follows:
Try {
$SqlCmd.CommandText = $_.Trim();
$reader = $SqlCmd.ExecuteNonQuery()
} Catch {
Write-Error "$($SqlCmd.CommandText) resulted in an error"
$_
}
Note the $_ within the Catch block would contain the error that occurred. After the Catch is executed the rest of the script should then carry on as normal.

Answer 2

Use the ErrorAction preference as SilentlyContinue wherever there is an executing statement or a statement which you feel is likely to throw an error. In you current script, you can do this -
foreach ($sqlScript in Get-ChildItem -path "$pathToScripts" -Filter *.sql | sort-object)
{
Write-Host "Running Script " $sqlScript.Name
#Execute the query
switch ($removeComments)
{
$true
{
(Get-Content $sqlScript.FullName -Encoding UTF8 | Out-String) -replace '(?s)/\*.*?\*/', " " -split '\r?\n\s*go\s*\r\n?' -notmatch '^\s*$' -ErrorAction SilentlyContinue |
ForEach-Object { $SqlCmd.CommandText = $_.Trim(); $reader = $SqlCmd.ExecuteNonQuery() }
}
$false
{
(Get-Content $sqlScript.FullName -Encoding UTF8 | Out-String) -split '\r?\n\s*go\s*\r\n?' -notmatch '^\s*$' -ErrorAction SilentlyContinue |
ForEach-Object { $SqlCmd.CommandText = $_.Trim(); $reader = $SqlCmd.ExecuteNonQuery() }
}
}
}
See this and this link for details.