mysql join 的同时可以筛选数据

select a.id as goods_id,a.name,a.store_id,a.salecount,a.logoimg,b.name as store_name,count(c.id) as mall_goods_count,c.type from sh_goods a LEFT JOIN sh_store b on a.store_id = b.id LEFT JOIN sh_mall_goods c on a.id = c.goods_id and c.mall_id = 9 where a.store_id in (select id from sh_store where user_id in (select id from sh_user where agent_id = 13 and status = 1) and status = 1) and a.status = 1 group by a.id;

LEFT JOIN sh_mall_goods c on a.id = c.goods_id and c.mall_id = 9