hpcc-systems / hpcc-systems/DataPatterns
Add multi-column cardinality
Open
Nobody has claimed this yet.
enhancement
- Dominant language
- ECL
- Stars
- 5
- Forks
- 5
- Avg merge
- 1d 2h
- Merged PRs (30d)
- 1
Description
Multi column cardinality can be added as feature if possible.
Some use cases:
- To identify the combination of columns that could be potentially used to identify the record uniquely
- To know the cadinality of all keyed columns in an Index
Contributor guide
No contributing guide indexed for this repository
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 names no files, tests, or existing entry points. First locate the current cardinality and index-profiling functionality, then clarify the intended API and how multi-column combinations should be represented; done should cover identifying potentially unique column combinations and reporting cardinality for all keyed columns.
Written by the indexing model from the issue text.
Assessment
- Domain
- data, databases
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100