Hi Jeno,

datagrid/DataTables widget has a column options' property called data-order that allows a column to be sorted by another column's value. So in your case I would clone your record_date and sort record_date by the cloned column like this:

//MyReport.php
    ->pipe(new \koolreport\processes\CopyColumn([
      "record_date_2" => "record_date"
    ]))
    ->pipe($this->dataStore('myDS')); 

//MyReport.view.php
                DataTables::create(array(
                    ...
                    "columns"=>array(
                        ...
                        "record_date" => [
                            "type"=>"datetime",
                            "format"=>"Y-m-d H:i:s",
                            "displayFormat"=>"m/d/Y G:iA" ,
                            "data-order" => "record_date_2",                     
                        ],
                        ...
                    )
                )); 

Let me know how this works for you. Thanks!