Improve Arrowchat integration

In arrowchat to show the list of connected friends the following query is performed. In this query does not take into account if the request of friendship was accepted, for this the field Check has to be 1.

$sql = ("

SELECT DISTINCT " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_USERID . " userid, " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_NAME . " username, arrowchat_status.session_time lastactivity, " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_AVATAR . " avatar, " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_NAME . " link, arrowchat_status.is_admin, arrowchat_status.status 

FROM (SELECT ID,  profile FROM sys_friend_list UNION SELECT profile, ID FROM sys_friend_list) friends  

JOIN " . TABLE_PREFIX . DB_USERTABLE . " 

ON  " . TABLE_PREFIX . DB_FRIENDSTABLE . "." . DB_FRIENDSTABLE_FRIENDID . " = " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_USERID . " 

LEFT JOIN arrowchat_status 

ON " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_USERID . " = arrowchat_status.userid 

WHERE " . TABLE_PREFIX . DB_FRIENDSTABLE . "." . DB_FRIENDSTABLE_USERID . " = '" . $db->escape_string($userid) . "' 

AND arrowchat_status.session_time > (" . time() . " - " . $online_timeout . " - 60)

ORDER BY " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_NAME . " ASC

");

How can it be improved?

Nothing?

Try to modify it the following way:

$sql = ("

SELECT DISTINCT " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_USERID . " userid, " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_NAME . " username, arrowchat_status.session_time lastactivity, " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_AVATAR . " avatar, " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_NAME . " link, arrowchat_status.is_admin, arrowchat_status.status 

FROM (SELECT ID,  profile FROM sys_friend_list WHERE `Check` = 1 UNION SELECT profile, ID FROM sys_friend_list WHERE `Check` = 1 ) friends  

JOIN " . TABLE_PREFIX . DB_USERTABLE . " 

ON  " . TABLE_PREFIX . DB_FRIENDSTABLE . "." . DB_FRIENDSTABLE_FRIENDID . " = " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_USERID . " 

LEFT JOIN arrowchat_status 

ON " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_USERID . " = arrowchat_status.userid 

WHERE " . TABLE_PREFIX . DB_FRIENDSTABLE . "." . DB_FRIENDSTABLE_USERID . " = '" . $db->escape_string($userid) . "' 

AND arrowchat_status.session_time > (" . time() . " - " . $online_timeout . " - 60)

ORDER BY " . TABLE_PREFIX . DB_USERTABLE . "." . DB_USERTABLE_NAME . " ASC

 

");

Thank you works perfect.