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Posted to github@datafusion.apache.org by "pepijnve (via GitHub)" <gi...@apache.org> on 2025/10/14 14:21:13 UTC
[I] Improve performance of queries of the form `SELECT *, CASE ... END` [datafusion]
pepijnve opened a new issue, #18056:
URL: https://github.com/apache/datafusion/issues/18056
### Is your feature request related to a problem or challenge?
When enriching a relation with a classification derived using complex `CASE` expressions performance can be quite slow.
### Describe the solution you'd like
Investigate if there are ways to optimize `case` evaluation.
### Describe alternatives you've considered
_No response_
### Additional context
_No response_
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Re: [I] Improve performance of queries of the form `SELECT *, CASE ... END` [datafusion]
Posted by "rluvaton (via GitHub)" <gi...@apache.org>.
rluvaton commented on issue #18056:
URL: https://github.com/apache/datafusion/issues/18056#issuecomment-3422602063
Can you please add more description, I'm not sure I understand
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Re: [I] Improve performance of queries of the form `SELECT *, CASE ... END` [datafusion]
Posted by "pepijnve (via GitHub)" <gi...@apache.org>.
pepijnve commented on issue #18056:
URL: https://github.com/apache/datafusion/issues/18056#issuecomment-3422842535
@rluvaton add some more detail. The PR (which I'm afraid has stalled a bit on my end) gives some ideas on how I think we could improve this.
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Re: [I] Improve performance of queries of the form `SELECT *, CASE ... END` [datafusion]
Posted by "pepijnve (via GitHub)" <gi...@apache.org>.
pepijnve commented on issue #18056:
URL: https://github.com/apache/datafusion/issues/18056#issuecomment-3402148851
take
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Re: [I] Improve performance of queries of the form `SELECT *, CASE ... END` [datafusion]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #18056: Improve performance of queries of the form `SELECT *, CASE ... END`
URL: https://github.com/apache/datafusion/issues/18056
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