Convert SQL varbinary content into .pkg file using PowerShell - sql

Question

I use SQL Server and I have a SQL table called [dbo].[TemplatePackageContent] which has only two fields:
[TemplatePackageContentId] [uniqueidentifier] NOT NULL,
[Content] [varbinary](max) NULL
I'd like to create PowerShell script which reads whole content from this table and for each row, it will generate a file, in a given directory with format {TemplatePackageContentId}.pkg based on the Content field.
So far I've managed how to read the whole content of the table:
param(
[string] $dataSource = "(localdb)\mssqlLocalDb",
[string] $database = "Hda_tenancy1",
[string] $sqlCommand = $("SELECT * FROM TemplatePackageContent")
)
$connectionString = "Data Source=$dataSource; " +
"Integrated Security=SSPI; " +
"Initial Catalog=$database"
$connection = new-object system.data.SqlClient.SQLConnection($connectionString)
$command = new-object system.data.sqlclient.sqlcommand($sqlCommand,$connection)
$connection.Open()
$adapter = New-Object System.Data.sqlclient.sqlDataAdapter $command
$dataset = New-Object System.Data.DataSet
$adapter.Fill($dataSet) | Out-Null
$connection.Close()
$dataSet.Tables
Now I would like to make a mentioned conversion of received result, presumably looping thru each row.
I found this article which solves a similar problem in c# and I was thinking about using some of the logic from there and try to convert it into a PowerShell script.
What is the most optimal way to convert all the "Content" fields into files with .pkg format and what library should I use or what approach?
Any ideas?
Cheers

Answer 1

I ended up with this solution:
param(
[string] $dataSource = "(localdb)\mssqlLocalDb",
[string] $database = "Hda_tenancy1",
[string] $templatePath = "C:\dev\hubadvance\Seeding\Templates\"
)
$sqlCommand = $("SELECT * FROM TemplatePackageContent");
$connection = new-object System.Data.SqlClient.SQLConnection("Data Source=$dataSource;Integrated Security=SSPI;Initial Catalog=$database");
$cmd = new-object System.Data.SqlClient.SqlCommand($sqlCommand, $connection);
$connection.Open();
$reader = $cmd.ExecuteReader();
$results = #();
while ($reader.Read())
{
$row = #{}
for ($i = 0; $i -lt $reader.FieldCount; $i++)
{
$row[$reader.GetName($i)] = $reader.GetValue($i);
}
$results += new-object psobject -property $row;
}
$connection.Close();
foreach ($row in $results)
{
Write-Host $row.TemplatePackageContentId;
$path = $templatePath + $row.TemplatePackageContentId + ".pkg";
[System.IO.File]::AppendAllText($path, $row.Content);
}