SidChaudhary7 opened a new pull request, #17628:
URL: https://github.com/apache/datafusion/pull/17628
## Which issue does this PR close?
N/A - This is a new optimization improvement
- Closes #.
## Rationale for this change
This PR implements an optimization for CASE expressions that removes
unreachable `WHEN false` branches and handles `WHEN true` cases that make
subsequent branches unreachable.
For example:
```sql
CASE
WHEN false THEN 1 -- never executed
ELSE 2
END
## Are there any user-facing changes?
No
This is my first contribution to DataFusion. Could a committer please
trigger the CI tasks?
@alamb @andygrove @tustvold @ursabot
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