select[distinct]
from
join(如left join)
on
where
group by
having
union
order by
limit
mysql語句執行順序按照上述執行
select[distinct]
from
join(如left join)
on
where
group by
having
union
order by
limit
mysql語句執行順序按照上述執行
01 背 景 播放鏈路是愛奇藝最重要的業務,鏈路穩定性極其重要,隨着愛奇藝用戶的不斷增長和熱播劇集的推廣,播放鏈路往往面臨着難以預估的用戶流量的突增,考