berkaysynnada opened a new pull request, #16893:
URL: https://github.com/apache/datafusion/pull/16893
## Which issue does this PR close?
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- Closes #.
## Rationale for this change
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While building the equivalence properties of joins, we can identify more
precise orderings when the join is a LeftJoin and the join algorithm preserves
the order of the left input (and similarly for RightJoin with the right input).
## What changes are included in this PR?
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In addition to the main change described above:
* Replaced `hash_join_swap_subrule` with the actual optimizer rule it
represents, as this is the rule we should be testing
* Extended the columns in the `build_sides_record_batches` utility to
include a new column that generates randomly ordered data. While not yet used,
this column will be useful for future fuzz testing of joins.
* Increased the visibility of `reorder_output_after_swap()` and
`swap_join_projection()`, as these functions are likely to be needed across
optimizer rules.
## Are these changes tested?
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## Are there any user-facing changes?
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