Capturing in PowerShell different sqlcmd exitcode for connectivity/data issues

问题

I am calling sqlcmd from PowerShell to execute a T-SQL script. Currently I am using ":On Error exit" to exit the script if there is an error caused by the data used violating a constraint etc. This is handled by PowerShell detecting the $SqlcmdProcess.ExitCode of 1.

However, if there is a connectivity issue with the database, sqlcmd also gives an ExitCode of 1. Is there a way to set the :On Error ExitCode to something other than 1? I'm aware of using something like :Exit(SELECT 2) to do this, but I'd rather still use :On Error so I don't have to rewrite the script.

回答1:

You could use the exit keyword in Powershell. Here's an example

Create a script called sqlcmdexit.ps1, with something like the following:

$result = sqlcmd -S"missing" -d master -Q "select @@servername"
if ($result[1] -like "*Error Locating Server/Instance Specified*" -or $result[1] -like "*Could not open a connection to SQL Server*") {
    exit 99
}

Call script and observe exist code:

C:\Users\Public\bin>.\sqlcmdExit.ps1
Sqlcmd: Error: Microsoft SQL Server Native Client 10.0 : A network-related or instance-specific error has occurred while
 establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and i
f SQL Server is configured to allow remote connections. For more information see SQL Server Books Online..
Sqlcmd: Error: Microsoft SQL Server Native Client 10.0 : Login timeout expired.

C:\Users\Public\bin>$LASTEXITCODE
99

I'm not aware of any way to set default ExitCode. Using start-process you could something similar:

$tempFile = [io.path]::GetTempFileName()
$exitCode = (Start-Process -FilePath "sqlcmd.exe" -ArgumentList @"
-S"missing" -d master -Q "select @@servername"
"@ -Wait -NoNewWindow -RedirectStandardOutput $tempFile -Passthru).ExitCode

if ($exitCode -eq 1) {
    $result = get-content $tempfile
    if ($result[1] -like "*Error Locating Server/Instance Specified*" -or $result[1] -like "*Could not open a connection to SQL Server*") {
        remove-item $tempFile
        Exit 99
    }
}
else {
    remove-item $tempfile
    Exit $exitCode
}

来源：https://stackoverflow.com/questions/11647870/capturing-in-powershell-different-sqlcmd-exitcode-for-connectivity-data-issues

标签

tsql

powershell

error-handling

sqlcmd

exit-code