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Posted to github@datafusion.apache.org by "timsaucer (via GitHub)" <gi...@apache.org> on 2026/03/29 16:13:52 UTC
[I] Add missing conditional functions (greatest, least, nvl2, ifnull) [datafusion-python]
timsaucer opened a new issue, #1449:
URL: https://github.com/apache/datafusion-python/issues/1449
## Summary
Several commonly-used conditional functions from upstream DataFusion are not exposed in datafusion-python.
## Missing Functions
- [ ] `greatest` — returns the greatest value from a list of expressions
- [ ] `least` — returns the least value from a list of expressions
- [ ] `nvl2` — returns one value if input is not null, another if it is null
- [ ] `ifnull` — alias for `nvl`/`coalesce`
## Upstream Reference
- https://datafusion.apache.org/user-guide/sql/scalar_functions.html (Conditional Functions section)
## Implementation
- Rust bindings: `crates/core/src/functions.rs`
- Python wrappers: `python/datafusion/functions.py`
> **Note:** This gap analysis was performed using an AI agent comparing upstream DataFusion v53 documentation against the current datafusion-python codebase.
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Re: [I] Add missing conditional functions (greatest, least, nvl2, ifnull) [datafusion-python]
Posted by "timsaucer (via GitHub)" <gi...@apache.org>.
timsaucer closed issue #1449: Add missing conditional functions (greatest, least, nvl2, ifnull)
URL: https://github.com/apache/datafusion-python/issues/1449
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