select /*+ driving_site(a) driving_site(b) driving_site(c) */ a.object_id,b.object_type,c.object_sid from [email protected] a,[email protected] b,[email protected] c,d4 where a.object_id=b.object_id and b.object_ccid=c.object_ccid and c.object_sod=d.object_sod
加了 ‘/*+ driving_site(关联表1别名) driving_site(关联表2别名) driving_site(关联表3别名) */‘ 速度快甚至几十倍
时间: 2024-10-11 17:33:15