<?php // $Id: mysql.php,v 1.7 2006/04/24 08:28:21 vyshane Exp $

function label_upgrade($oldversion) {

/// This function does anything necessary to upgrade 
/// older versions to match current functionality 

    global $CFG;

    if ($oldversion < 2003091400) {
        table_column("label", "", "course", "integer", "10", "unsigned", "0", "not null", "id");
    }

    if ($oldversion < 2004021900) {
        modify_database("", "INSERT INTO prefix_log_display (module, action, mtable, field) VALUES ('label', 'add', 'quiz', 'name');");
        modify_database("", "INSERT INTO prefix_log_display (module, action, mtable, field) VALUES ('label', 'update', 'quiz', 'name');");
    }

    if ($oldversion < 2004111200) { //DROP first
        execute_sql("ALTER TABLE {$CFG->prefix}label DROP INDEX course;",false);
        modify_database('','ALTER TABLE prefix_label ADD INDEX course (course);');
    }

    return true;

}

?>
