[nquang]

My forum is very slow with this query.

SELECT 
			userfield.*, usertextfield.*, user.*, UNIX_TIMESTAMP(passworddate) AS passworddate, user.languageid AS saved_languageid,
			IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid,
			language.phrasegroup_global AS phrasegroup_global,
			language.options AS lang_options,
			language.languagecode AS lang_code,
			language.charset AS lang_charset,
			language.locale AS lang_locale,
			language.imagesoverride AS lang_imagesoverride,
			language.dateoverride AS lang_dateoverride,
			language.timeoverride AS lang_timeoverride,
			language.registereddateoverride AS lang_registereddateoverride,
			language.calformat1override AS lang_calformat1override,
			language.calformat2override AS lang_calformat2override,
			language.logdateoverride AS lang_logdateoverride,
			language.decimalsep AS lang_decimalsep,
			language.thousandsep AS lang_thousandsep
			,mgcugp.mgc_cb_evo_default_color,mgcugp.mgc_cb_evo_chanid
		,kbank_granted.allow_count AS kbank_granted_count
		,kbank_granted.allow_userid AS kbank_granted_userid
		,kbank_granted.allow_username AS kbank_granted_username
		,kbank_granted.allow_usergroupid AS kbank_granted_usergroupid
		,kbank_granted.allow_membergroupids AS kbank_granted_membergroupids
		,kbank_granted.allow_post_thanks_thanked_times AS kbank_granted_post_thanks_thanked_times
	
		FROM user AS user
		LEFT JOIN userfield AS userfield ON (user.userid = userfield.userid)
		LEFT JOIN usertextfield AS usertextfield ON (usertextfield.userid = user.userid) LEFT JOIN language AS language ON (language.languageid = IF(user.languageid = 0, 1, user.languageid)) 
		 LEFT JOIN usergroup AS mgcugp ON (user.usergroupid=mgcugp.usergroupid) 
		LEFT JOIN (
			SELECT
				kbank_granted.userid AS userid
				,COUNT(*) AS allow_count
				,GROUP_CONCAT(user.userid SEPARATOR '|') AS allow_userid
				,GROUP_CONCAT(user.username SEPARATOR '|') AS allow_username
				,GROUP_CONCAT(user.usergroupid SEPARATOR '|') AS allow_usergroupid
				,GROUP_CONCAT(user.membergroupids SEPARATOR '|') AS allow_membergroupids
				,GROUP_CONCAT(user.post_thanks_thanked_times SEPARATOR '|') AS allow_post_thanks_thanked_times
			FROM `kbank_granted_permission` AS kbank_granted
			INNER JOIN `user` AS user ON (user.userid = kbank_granted.allowid)
			WHERE kbank_granted.userid = 4124
			GROUP BY kbank_granted.userid
		) AS kbank_granted ON (kbank_granted.userid = user.userid)
	
		WHERE user.userid = 4124;

Can you give me some recommend about optimization (optimize query or optimize forum-admincp or optimize mysql ...)

THANK YOU!