streams/Code/Update/_1211.php

<?php

namespace Code\Update;

class _1211
{

    public function run()
    {

        if (ACTIVE_DBTYPE == DBTYPE_POSTGRES) {
            $r1 = q("ALTER TABLE channel ADD channel_active timestamp NOT NULL DEFAULT '0001-01-01 00:00:00' ");
            $r2 = q("create index \"channel_active_idx\" on channel (\"channel_active\")");

            $r = ($r1 && $r2);
        } else {
            $r = q("ALTER TABLE `channel` ADD `channel_active` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' , 
				ADD INDEX `channel_active` (`channel_active`)");
        }

        if ($r) {
            return UPDATE_SUCCESS;
        }
        return UPDATE_FAILED;
    }
}