timsaucer opened a new pull request, #836:
URL: https://github.com/apache/datafusion-python/pull/836
# Which issue does this PR close?
None.
# Rationale for this change
We already have `case` functions exposed, but we do not have the `when`
function exposed, which gives you the ability to do conditional statements
without a base. This PR just exposes the function already available in
DataFusion.
# What changes are included in this PR?
- Exposed `when` in functions.
- Add unit test.
# Are there any user-facing changes?
Adds `datafusion.functions.when`.
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