<?php $wqt = db("welder_tests")
->select(
    "naks_id",
    "wpq_document_no",
    "material_group_1",
    "material_group_2",
    "grade_1",
    "grade_2",
    "dia_min",
    "dia_max",
    "thk_min",
    "thk_max",
    "welding_method",
    "naks_no",
    "welding_date",
    "naks_technology_group",                                                                          
    "approval_date",
    "naks_validity",
    )
->get();

/*
foreach($weldmap AS &$w) {
    $w->welder_1 = get_welder_id($w->welder_1);
    $w->welder_2 = get_welder_id($w->welder_2);
}
*/
echo json_encode_tr($wqt);
?>