Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Segmentation fault

Open
#88 3 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
c, sql
Domain
databases

Research direction

Start by reproducing the crash with the reported SELECT statement and compare the parser log stages, especially the WHERE comparison that is reported as a join condition. Trace SQLAdvisor's SQL parsing and join-condition handling to determine why this input reaches that path. Done means the query parses without a segmentation fault and no longer produces an incorrect join-condition interpretation.

Written by the indexing model from the issue text.

Description

select * from rocket_release where end_time>start_time order by id desc

日志:
2020-06-03 15:38:00 7482 [Note] 第1步: 对SQL解析优化之后得到的SQL:select * AS * from nasa.rocket_release where (end_time > start_time) order by id desc
2020-06-03 15:38:00 7482 [Note] 第2步:开始解析join on条件:end_time=start_time
Segmentation fault

没看实现代码,但是估计是识别解析的逻辑有问题,不知道这里为什么会有join on条件

Dominant language
C
Stars
5.6k
Forks
1.2k
PR merge metrics
No merged PRs in 30d

Getting set up

This project ships no dev container, Dockerfile or contributing guide, so setting up is up to you: start from its README, and see our first-contribution guide for the general steps.

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from Meituan-Dianping/SQLAdvisor

All issues in Meituan-Dianping/SQLAdvisor

Similar issues

More C issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.