摘要: 如下所示: lightdb@oradb=# explain analyze select * from (select a.*,rownum rn from (select * from v,v1 where v.id=v1.id and not exists (select 1 from t wh 阅读全文
posted @ 2024-09-29 15:42 zhjh256 阅读(4) 评论(0) 推荐(0) 编辑