Child Row with database SQL Server

Hello,

I would like to do : https://datatables.net/examples/api/row_details.html

Parent row : Nom - Adresse - CodePostal - Ville - Pays
Children row : Telephone - Telecopie - SiteInternet - SiteSupport

The data is stored in the table name : 'Para_Editeur'

I work with database SQL Server.

1. How I can add icon "+" on the rows of my table ?
2. How I search the data of my row parent ?

My script 'editeur.js' (Datatable parent):

/* Formatting function for row details - modify as you need */
function format ( d ) {
    // `d` is the original data object for the row
    return '<table cellpadding="5" cellspacing="0" border="0" style="padding-left:50px;">'+   
        '<tr>'+
            '<td>Téléphone :</td>'+
            '<td>'+d.Telephone+'</td>'+
        '</tr>'+
        '<tr>'+
            '<td>Télécopie :</td>'+
            '<td>'+d.Telecopie+'</td>'+
        '</tr>'+
        '<tr>'+
            '<td>Site Internet :</td>'+
            '<td>'+d.SiteInternet+'</td>'+
        '</tr>'+
        '<tr>'+
            '<td>Site Support :</td>'+
            '<td>'+d.SiteSupport+'</td>'+
        '</tr>'+     
    '</table>';
}
 
$(document).ready(function() {
    var table = $('#table_editeur').DataTable( {
        "bProcessing": true,
        "serverSide": true,
        "ajax":{
            url :"./response-displayrow_editeur.php", // json datasource
            type: "post",  // type of method  ,GET/POST/DELETE
            error: function(){
                $("#table_editeur_processing").css("display","none");
              }            
          },        
        "columns": [
            {
                "className":      'details-control',
                "orderable":      false,
                "data":           null,
                "defaultContent": '',
            },
            { "data": "Nom" },
            { "data": "Adresse" },
            { "data": "CodePostal" },
            { "data": "Ville" },
            { "data": "Pays" },
            { "data": "Telephone" },
            { "data": "Telecopie" },
            { "data": "SiteInternet" },
            { "data": "SiteSupport" },
        ],
        "order": [[1, 'asc']]
    } );
     
    // Add event listener for opening and closing details
    $('#table_editeur tbody').on('click', 'td.details-control', function () {        
        var tr = $(this).closest('tr');
        // var tdi = tr.find("i.fa");
        var row = table.row( tr );
 
        if ( row.child.isShown() ) {
            // This row is already open - close it
            row.child.hide();
            // tr.find('svg').attr('data-icon', 'plus-circle');
            tr.removeClass('shown');            
            // tdi.first().removeClass('fa-minus-square');
            // tdi.first().addClass('fa-plus-square');
        }
        else {
            // Open this row
            row.child( format(row.data()) ).show();
            // row.child(format(tr.data('ACA'), tr.data('ACA'))).show();
            // tr.find('svg').attr('data-icon', 'minus-circle');
            tr.addClass('shown');
            // tdi.first().removeClass('fa-plus-square');
            // tdi.first().addClass('fa-minus-square');
        }
    } );    
} );

My script 'response-displayrow_editeur.php' (Datatable parent):

<?php
    //include connection file
    include_once(".\db_connection.php");
 
    // getting total number records without any search
    $sql = "SELECT dbo.Para_Editeur.Nom,dbo.Para_Editeur.Telephone,dbo.Para_Editeur.Telecopie,dbo.Para_Editeur.SiteInternet,dbo.Para_Editeur.SiteSupport FROM dbo.Para_Editeur";
    $stmt = sqlsrv_query( $conn, $sql);

    if( $stmt === false ) {
        die( print_r( sqlsrv_errors(), true));
        }

    //iterate on results row and create new index array of data
    while( $obj = sqlsrv_fetch_object( $stmt)) {
         $data[] = $obj;
    }   
 
    echo json_encode($json_data);  // send data as json format
 
?>

Thank you for help