windows server，无论修改my.ini的tmp_table_size，max_heap_table_size到多少，情况都一样。
同样的表和查询语句，在本地运行，没出现慢查询。
SELECT
g.goods_id,
g.goods_name,
g.shop_price,
g.goods_thumb,
SUM(og.goods_number) AS goods_number
FROM
`chinaetm`.`ecs_goods` AS g,
`chinaetm`.`ecs_order_info` AS o,
`chinaetm`.`ecs_order_goods` AS og
WHERE
g.is_on_sale = 1
AND g.is_alone_sale = 1
AND g.is_delete = 0
AND (
g.cat_id IN (
'21',
'75',
'206',
'207',
'208',
'209',
'210',
'211',
'212'
) OR g.goods_id IN ('')
) AND og.order_id = o.order_id
AND og.goods_id = g.goods_id
AND (
o.order_status = '1'
OR o.order_status = '5'
)
AND (
o.pay_status = '2'
OR o.pay_status = '1'
)
AND (
o.shipping_status = '1'
OR o.shipping_status = '2'
)
GROUP BY
g.goods_id
ORDER BY
goods_number DESC,
g.goods_id DESC
explain结果
