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 85
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7678
answered Jun 19, 2024
Related Questions
请教各位大佬,如何使用doris 统计k线数据
1 answers
doris的group commit使用问题
2 answers
Doris SQL解析慢
1 answers
桶数设置为6,12后,性能还比不上桶为10
1 answers
异步物化视图刷新失败,提示“errCode = 2, detailMessage = (10.56.88.77)[CANCELLED]failed to open DeltaWriter 90250840: not enough streams 1/2”
2 answers
不考虑数据同步,doris直接跨集群实例查询有哪些方法?
1 answers

Terms of service Privacy policy

Powered by Answer - the open-source software that powers Q&A communities.
Made with love © 2025 Apache Doris 中文技术论坛.