Meituan-Dianping / Meituan-Dianping/Zebra
分库分表不支持子查询
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- Dominant language
- Java
- Stars
- 2.8k
- Forks
- 705
- PR merge metrics
- No merged PRs in 30d
Description
分库分表不支持子查询，例如：select * from tableA where id in(select id from tableB)
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue concerns database sharding and a subquery such as select * from tableA where id in(select id from tableB). Start by tracing how sharded queries are parsed and routed, then reproduce this example; done means the subquery works correctly with database and table sharding.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, mysql
- Domain
- databases
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100