求MYSQL语句优化
小弟不才。。涉及两个表的操作。。于是写了如下冗长的mysql语句，求高手帮忙优化顺便指点下。


SELECT id,partner_id,
(SELECT TITLE FROM partner WHERE id=team.partner_id) as partner_title,
(SELECT location FROM partner WHERE id=team.partner_id) as partner_location,
(SELECT longlat FROM partner WHERE id=team.partner_id) as other,
(SELECT address FROM partner WHERE id=team.partner_id) as partner_address,
(SELECT homepage FROM partner WHERE id=team.partner_id) as homepage,
((team_price / market_price) *10) as ddd,sort_order,
title, userreview, product,now_number,group_id, FROM_UNIXTIME(expire_time) as expire_time, FROM_UNIXTIME( begin_time) AS begin_time, FROM_UNIXTIME(end_time) AS end_time,
team_price,summary ,market_price,image,summary,notice,detail FROM team
WHERE id=@id
ORDER by sort_order desc

[解决办法]
在
partner：ID
team：partner_id
上建立索引
[解决办法]
创建下面两个索引即可。
create index x1 on partner(id);
create index x2 on team(id,sort_order);


在team创建partner_id的索引，对这个索引毫无意义。
[解决办法]
创建索引后，语句可以改为如下。

SQL code

select t.id,t.partner_id,      p.TITLE,    p,location,    p,longlat ,    p,address ,    p,homepage,    title, userreview, product,now_number,group_id, FROM_UNIXTIME(expire_time) as expire_time,     FROM_UNIXTIME( begin_time) AS begin_time, FROM_UNIXTIME(end_time) AS end_time,    team_price,summary ,market_price,image,summary,notice,detail from team t left join partner p on t.partner_id=p.idwhere t.id=@id  ORDER by t.sort_order desc