kosiew opened a new pull request, #15556:
URL: https://github.com/apache/datafusion/pull/15556
## Which issue does this PR close?
- I added some slt tests to investigate the issue #15549
## Rationale for this change
This change adds SQL logic tests to validate support for accessing fields
within compound (struct-like) columns during `JOIN` operations.
## What changes are included in this PR?
- Introduced two new tables: `compound_field_table_t` and
`compound_field_table_u`, each containing a single column with a compound field
(`{r: <string>, c: <number>}`).
- Added four test queries covering:
- Field access using string keys in `JOIN` conditions with aliases
- Same logic without using aliases
- Joins on numeric field values within the compound field
- Joins with combined conditions on both fields
- Added cleanup statements to drop the temporary tables after the tests
## Are these changes tested?
✅ Yes. This PR adds SQL logic tests directly into the `joins.slt` test
suite. These queries act as both verification and documentation for expected
behavior.
## Are there any user-facing changes?
🟢 No user-facing changes. This is strictly a test-only addition, focused on
validating internal functionality.
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