Custom Expression functions `Median()` and `Percentile()` not available for Vertica
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- Dominant language
- Clojure
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Description
**Describe the bug**
Custom Expression functions `Median()` and `Percentile()` not available for Vertica
**To Reproduce**
1. Custom question > (your Vertica database and a table)
2. Summarize > Custom Expression > list of functions should include `Median` and `Percentile`.
**Information about your Metabase Installation:**
Metabase 0.35.4
**Additional context**
Related to #12222
Contributor guide
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
Start at Custom question > Summarize > Custom Expression and trace how the function list is built for Vertica. Compare the available functions with the requested Median and Percentile support, then verify that both appear for a Vertica database without changing behavior for other databases.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- clojure, sql
- Domain
- databases
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 42/100