functional.sqlancer.tidb_challenge_48_test. UNIQUE constraint on DECIMAL/floating-point columns causes incorrect result for NULL in AND

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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 5.0.3.1674 2025.06.27 3ee5c P P 580 393 2025.06.30 11:18:23.707 2025.06.30 11:18:24.287 2025.06.30 10:14:43.106 2025.06.30 10:14:43.499
2 5.0.3.1657 2025.06.26 dcb8a P P 596 382 2025.06.27 11:19:47.855 2025.06.27 11:19:48.451 2025.06.27 10:16:07.664 2025.06.27 10:16:08.046
3 5.0.3.1657 2025.06.20 8b4d2 P P 611 375 2025.06.26 11:34:15.859 2025.06.26 11:34:16.470 2025.06.26 10:30:20.320 2025.06.26 10:30:20.695
4 5.0.3.1657 2025.06.19 4bd4c P P 643 380 2025.06.20 05:38:24.661 2025.06.20 05:38:25.304 2025.06.20 04:34:34.060 2025.06.20 04:34:34.440
5 5.0.3.1657 2025.06.11 dae6f P P 609 377 2025.06.19 11:09:57.825 2025.06.19 11:09:58.434 2025.06.19 10:06:00.556 2025.06.19 10:06:00.933
6 5.0.3.1657 2025.06.10 dbc92 P P 614 388 2025.06.11 08:56:08.640 2025.06.11 08:56:09.254 2025.06.11 07:52:02.442 2025.06.11 07:52:02.830
7 5.0.3.1656 2025.06.05 00512 P P 610 379 2025.06.10 10:11:28.043 2025.06.10 10:11:28.653 2025.06.10 09:07:04.281 2025.06.10 09:07:04.660

Elapsed time, ms. Chart for last 7 runs:

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