Powershell - mySQL Query, error every other run - mysql

Question

I am working on a powershell script that needs some input from a mySQL database. For the life of me I can't tell what I've done wrong here.
Every other time I run this script, I get an error Exception calling "Open" with "0" argument(s): "Out of sync with server"[0]. So, the first run, it will pull the expected data and dump it on my screen, then on the next run I get that error. And the cycle just repeats. Here is my full code (right now its just a test query to pull then dump the data. If it matters, the mySQL server is running MariaDB 10.3.14 on a Ubuntu 18.04 host.
$error.Clear()
$sqlQuery = get-content -path "C:\querytext.sql" -Raw
$sqlUser = "myuser"
$sqlPass = "mypass"
$sqlHost = "myserver"
$sqlDB = "dbname"
$connectionString = "server= $sqlHost;port=3306;uid=$sqlUser;pwd=$sqlPass;database=$sqlDB"
Try{
$connection = New-Object MySql.data.MySqlClient.MySqlConnection
$connection.ConnectionString = $connectionString
$connection.Open()
$command = New-Object MySql.data.MySqlClient.MySqlCommand($sqlQuery,$connection)
$dataAdapter = New-Object MySql.data.MySqlClient.MySqlDataAdapter($command)
$dataSet = New-Object System.Data.DataSet
$dataAdapter.fill($dataSet, "data") | Out-Null
$command.Dispose()
$sqlResults = $dataSet.tables["data"]
}
Catch {
Write-Host "ERROR : Unable to run query : $query `n$Error[0]"
}
$connection.close()
$sqlResults | Format-Table
$sqlResults | ForEach-Object {
write-host $_.fname
}

Answer 1

Might I suggest using the SQL PS module:
https://learn.microsoft.com/en-us/sql/powershell/download-sql-server-ps-module?view=sql-server-2017
That page has installation instructions and its from Microsoft. Personally, the dotnet class you are using, it works, but its relatively difficult to work with.
Connecting to a DB is much simpler with this module and you do not have to worry about micromanaging connections.
Invoke-Sqlcmd -ServerInstance $sqlHost -Query $sqlQuery -Database $sqlDB -Username $sqlUser -Password $sqlPass
This will return a PS object like every other PS cmdlet.