询问一个SQL查询语句的问题，MYSQL的，来看看吧！
我的SQL语句如下 日中三个表数据量分别为 1700 13000 34 这样查询要40秒才会出来结果（我远程连的服务器MYSQL）。 我表示压力很大。请大神给予指示，

SQL code

SELECT        COUNT(adverId) visit,        adverId,        statId        developersName,        productsName      FROM        tb_statistic_adver_visit v,        (SELECT            chid,            uid,            cpid         FROM            tb_statistic_stat) s,        (SELECT            developersName,            productsName,            developersId,id         FROM            tb_developers_service         WHERE            1=1         GROUP BY            developersId ) d     WHERE        1=1          AND s.uid=v.statId        AND s.cpid=d.developersId      GROUP BY        adverId

[解决办法]
贴出explain..执行计划
[解决办法]
这样嵌套的sql 我表示压力更大
[解决办法]
要达到什么目的
贴建表及插入记录的SQL，及要求结果出来看看
[解决办法]
贴出你的
show index from tb_statistic_adver_visit;
show index from tb_statistic_stat;
show index from tb_developers_service;



[解决办法]

SQL code

show create table tb_statistic_adver_visit;show create table tb_statistic_stat;show create table tb_developers_service;
[解决办法]
SQL code
create index idx_v_statId on tb_statistic_adver_visit(statId);create index idx_s_cpid on  tb_statistic_stat(cpid); create index idx_d_developersId on tb_developers_service(developersId);
[解决办法]
SELECT
       COUNT(adverId) visit,
       adverId,
       statId
       developersName,
       productsName 
   FROM
       tb_statistic_adver_visit v,
tb_statistic_stat s
       (SELECT
           developersName,
           productsName,
           developersId,id  
       FROM
           tb_developers_service  
       WHERE
           1=1  
       GROUP BY
           developersId ) d  
   WHERE
       1=1 
       AND s.uid=v.statId  
      AND s.cpid=d.developersId 
   GROUP BY
       adverId