我在我的服务器上使用 Django ORM、eav-django、mysql 5.1。当它进行这样的查询时，它完全杀死了我的小型服务器（实际上也是我的 4core 开发机器）。这是因为它指的是自己，即 bon_attr 表吗？
有没有什么好的技巧可以加快速度（缓存除外）？
SELECT DISTINCT `bon_property`.`id`, `bon_property`.`company_id`, `bon_property`.`remote_id`, `bon_property`.`category_id`, `bon_property`.`slug`, `bon_property`.`address_id`, `bon_property`.`address_given_id`, `bon_property`.`agent_contact_id`, `bon_property`.`date_modyfied`, `bon_property`.`status`
FROM `bon_property`
INNER JOIN `bon_attr` ON (`bon_property`.`id` = `bon_attr`.`entity_id`)
INNER JOIN `bon_attr` T5 ON (`bon_property`.`id` = T5.`entity_id`)
INNER JOIN `bon_attr` T6 ON (T5.`id` = T6.`id`)
INNER JOIN `bon_attr` T10 ON (`bon_property`.`id` = T10.`entity_id`)
INNER JOIN `bon_attr` T11 ON (T10.`id` = T11.`id`)
WHERE ((`bon_attr`.`value_float` <= 1
AND `bon_attr`.`entity_type_id` = 18 )
AND (`bon_attr`.`schema_id` = 23
AND `bon_attr`.`entity_type_id` = 18 )
AND (T6.`value_float` >= 1
AND T6.`entity_type_id` = 18 )
AND (T6.`schema_id` = 23
AND T6.`entity_type_id` = 18 )
AND `bon_property`.`company_id` = 27
AND (T11.`value_float` >= 200000
AND T11.`entity_type_id` = 18 )
AND (T11.`schema_id` = 42
AND T11.`entity_type_id` = 18 )
AND `bon_property`.`status` = 1 )
ORDER BY `bon_property`.`id` ASC;
即使这个查询正在杀死服务器：
SELECT * FROM `bon_property`
INNER JOIN `bon_attr` T3 ON (`bon_property`.`id` = T3.`entity_id`)
INNER JOIN `bon_attr` T4 ON (T3.`id` = T4.`id`)
INNER JOIN `bon_attr` T8 ON (`bon_property`.`id` = T8.`entity_id`)
WHERE `bon_property`.`status` = 1
大约 4 分钟后，慢查询日志显示 Query_time: 430.093778 Lock_time: 0.000247 Rows_sent: 0 Rows_examined: 164591659 并且我检查了大量行...
我的配置：http ://dpaste.com/hold/833263/
编辑类似查询的解释：
1 PRIMARY T4 ref PRIMARY,entity_type_id,bon_attr_299a9dd7,bon_attr_... bon_attr_6f9d19 4 const 9770 Using where; Using temporary; Using filesort
1 PRIMARY T9 ref PRIMARY,entity_type_id,bon_attr_299a9dd7,bon_attr_... bon_attr_6f9d19 4 const 12037 Using where
1 PRIMARY T3 eq_ref PRIMARY PRIMARY 4 om.T4.id 1 Using where
1 PRIMARY bon_property eq_ref PRIMARY,bon_property_543518c6 PRIMARY 4 om.T3.entity_id 1 Using where
1 PRIMARY T8 eq_ref PRIMARY PRIMARY 4 om.T9.id 1 Using where; Distinct
5 DEPENDENT SUBQUERY U1 ref entity_type_id,bon_attr_299a9dd7,bon_attr_6f9d19 entity_type_id 12 const,func,const 1 Using where; Using index
5 DEPENDENT SUBQUERY U0 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index
4 DEPENDENT SUBQUERY U1 ref entity_type_id,bon_attr_299a9dd7,bon_attr_147166d7 entity_type_id 8 const,func 17 Using where; Using index
4 DEPENDENT SUBQUERY U0 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index
3 DEPENDENT SUBQUERY U1 ref entity_type_id,bon_attr_299a9dd7,bon_attr_6f9d19 entity_type_id 12 const,func,const 1 Using where; Using index
3 DEPENDENT SUBQUERY U0 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index
2 DEPENDENT SUBQUERY U1 ref entity_type_id,bon_attr_299a9dd7,bon_attr_147166d7 bon_attr_147166d7 5 const 1 Using where
2 DEPENDENT SUBQUERY U0 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index
编辑 2 是的，这是一个索引它的问题，甚至更多 EXPLAIN 以及 Duke Silver 都非常有帮助。