Is your feature request related to a problem? Please describe.

Feature is related to correctness of the RW engine.

Describe the solution you'd like

  • Our Regression tests uses differential tests against PG and RW
  • Test cases currently are text-based. Missing an empty space results in test failures. We should port the format to something a bit smarter.
  • Take existing test cases #5156 (from e.g. DuckDB) and port them automatically to suite RW. This would require some templating to add special keywords from RW to the test cases.

Describe alternatives you've considered

No response

Additional context

CC @lmatz @BowenXiao1999

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