gene-bordegaray opened a new pull request, #22607:
URL: https://github.com/apache/datafusion/pull/22607

   ## Which issue does this PR close?
   
   - Part of #22397.
   - Discussion: #21992.
   
   ## Rationale for this change
   
   This adds a focused sqllogictest fixture for source-provided `Range` 
partitioning before changing optimizer behavior. It follows the direction 
discussed in #21992 and gives later planning PRs a stable baseline for when 
repartitioning can be removed.
   
   ## What changes are included in this PR?
   
   - Registers a `range_partitioned` test table for `range_partitioning.slt`.
   - Adds a sqllogictest-only source wrapper that reports `Range` partitioning 
when `range_key` is projected, and `UnknownPartitioning` when it is not.
   - Adds initial plan and result coverage for grouping on the range key and on 
a non-range key.
   
   ## Are these changes tested?
   
   Yes.
   
   - `cargo fmt --all`
   - `cargo test -p datafusion-sqllogictest --test sqllogictests 
range_partitioning`
   - `cargo clippy --all-targets --all-features -- -D warnings`
   
   ## Are there any user-facing changes?
   
   No. This is test-only infrastructure and sqllogictest coverage.


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