chamilo-lms2/main/reports/modules/course.php

<?php

$reports_modules['course'] = array();


function reports_modules_course_init()
{
}

function reports_modules_course_init_forEachCourses($course_code, $course_id, $course_db)
{
    global $reports_modules;

//	$reports_modules_course_toolid = reports_getToolId(TOOL_QUIZ);

    array_push($reports_modules['course'],
        array(
            'keys_query' =>
                'select '.$course_id.' as course_id, "'.$course_code.'" as course_code',
            'values_query_function' => 'reports_modules_course_val'
        ));
}

function reports_modules_course_val($course, $key_id)
{
    return array(
        'type' => 'sql',
        'sql' =>
            'select '.$key_id.', user_id as uid, '.
            '-1 as session_id, -1 as attempt, null as score, '.
            'NULL as progress, '.
            '(sum(logout_course_date) - sum(login_course_date)) as time, null as ts from '.
            Database::get_main_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS).
            ' where c_id = '.$course['real_id'].
            ' group by user_id'
    );
}