[I] Make EquivalenceProperties::new_with_schema not require aligned schema [datafusion]

["niebayes (via GitHub)" <gi...@apache.org>]

niebayes opened a new issue, #18933:
URL: https://github.com/apache/datafusion/issues/18933

   There generally has requirements for renaming, appending, removing a column from the input plan.
   If the input plan has an equivalence properties, it should be preserved as much as possible when the schema is altered.
   
   However, the current `EquivalenceProperties::new_with_schema` implementation requires the new schema and the original schema are aligned. Specifically, the number of columns and column positions should be consistent.
   
   I wonder if we can remove the align requirement.


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