functional.sqlancer.tidb_15844_test. NATURAL RIGHT JOIN results in an unexpected "Unknown column" error

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Full history of outcomes and elapsed time, ms:
NN SNAP_INFO CS_outcome SS_outcome CS_run_time SS_run_time CS_run_beg CS_run_end SS_run_beg SS_run_end
1 3.0.13.33809 2025.05.06 28ad0 P P 818 436 2025.06.30 15:18:31.492 2025.06.30 15:18:32.310 2025.06.30 14:16:48.579 2025.06.30 14:16:49.015

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