taosdata/TDengine

分页查询超级表特别慢

Open

#34,193 opened on Jan 7, 2026

View on GitHub
 (4 comments) (0 reactions) (0 assignees)C (5,002 forks)batch import
help wantedquestion

Repository metrics

Stars
 (24,849 stars)
PR merge metrics
 (Avg merge 1d 1h) (4 merged PRs in 30d)

Description

使用这样的sql语句查询对主键排序特别慢，这是为什么呢，有什么解决办法吗 select * from alarm_log order by ts desc limit 0,10;

Contributor guide

Research direction
Investigate the query execution plan for the 'order by' clause on super table and identify bottlenecks in sorting on primary key.
Tech stack
csql
Domain
databaseperformance
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
SQLDatabase concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75