internal/Test-SqlSa.ps1

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Function Test-SqlSa
{
<#
.SYNOPSIS
Internal function. Ensures sysadmin account access on SQL Server.
#>

[CmdletBinding()]
param (
[Parameter(Mandatory = $true)]
[ValidateNotNullOrEmpty()]
[Alias("ServerInstance", "SqlInstance")]
[object]$SqlServer,
[System.Management.Automation.PSCredential]$SqlCredential
)

try
{

if ($SqlServer.GetType() -eq [Microsoft.SqlServer.Management.Smo.Server])
{
return ($SqlServer.ConnectionContext.FixedServerRoles -match "SysAdmin")
}

$server = Connect-SqlServer -SqlServer $SqlServer -SqlCredential $SqlCredential
return ($server.ConnectionContext.FixedServerRoles -match "SysAdmin")
}
catch { return $false }
}