Apache Doris 中文技术论坛
Questions Tags Users Badges

【已解决】Doris的select count过程是怎样的?

Asked Jun 16, 2024 Modified Jun 27, 2024
Viewed 117
query

Doris的select count过程是怎样的?是直接查询的元数据吗?还是查询segment进行汇总?如何分析

edited Jun 27, 2024
JiangXiaoqiang3
asked Jun 16, 2024
1 Answers

当前dupkey是有做优化、例如直接查元数据返回,而agg和unikey模型的需要去扫文件返回。

edited Jan 1, 1970
张彬华7698
answered Jun 19, 2024
Related Questions
Doris3.1.4并发查询速度变慢
1 answers
ranger新增的表权限,在doris中不生效,doris版本 Version : doris-4.1.3-rc02
1 answers
max_by会不会忽略null值
1 answers
排序查询冷却到远程存储的数据报错
1 answers
Doris4.0.5版本有没有可以用低权执行select语句的curl接口
1 answers
3.0.8版本查hive外表报错:[INTERNAL_ERROR][E6] Parameters start = 0, length = 1, are out of bound
1 answers

Terms of service Privacy policy

Powered by Answer - the open-source software that powers Q&A communities.
Made with love © 2026 Apache Doris 中文技术论坛.