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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/10/19 19:11:33 UTC
[GitHub] [arrow-datafusion] alamb opened a new issue, #3895: Simplify `a AND a` and `a OR a`.
alamb opened a new issue, #3895:
URL: https://github.com/apache/arrow-datafusion/issues/3895
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
Some features like https://github.com/apache/arrow-datafusion/pull/3859 may find / introduce seemingly nonsensical predicates like `a AND a` -- in this case the expression simplifier should remove them.
**Describe the solution you'd like**
Add rewrite rules to rewrite
`a AND a` --> `a`
`a OR a` --> `a`
Rewrite rules are https://github.com/apache/arrow-datafusion/blob/feff5dc/datafusion/optimizer/src/simplify_expressions.rs#L793
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[GitHub] [arrow-datafusion] alamb commented on issue #3895: Simplify `a AND a` and `a OR a`.
Posted by GitBox <gi...@apache.org>.
alamb commented on issue #3895:
URL: https://github.com/apache/arrow-datafusion/issues/3895#issuecomment-1287758139
As pointed out by @src255 this is already implemented https://github.com/apache/arrow-datafusion/pull/3915#issuecomment-1287373139 🤔
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[GitHub] [arrow-datafusion] alamb commented on issue #3895: Simplify `a AND a` and `a OR a`.
Posted by GitBox <gi...@apache.org>.
alamb commented on issue #3895:
URL: https://github.com/apache/arrow-datafusion/issues/3895#issuecomment-1284478505
Marking as good first issue as there are many examples and existing tests to follow
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[GitHub] [arrow-datafusion] alamb closed issue #3895: Simplify `a AND a` and `a OR a`.
Posted by GitBox <gi...@apache.org>.
alamb closed issue #3895: Simplify `a AND a` and `a OR a`.
URL: https://github.com/apache/arrow-datafusion/issues/3895
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[GitHub] [arrow-datafusion] retikulum commented on issue #3895: Simplify `a AND a` and `a OR a`.
Posted by GitBox <gi...@apache.org>.
retikulum commented on issue #3895:
URL: https://github.com/apache/arrow-datafusion/issues/3895#issuecomment-1285633105
I will take a look!
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