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 5.0.3.1675 2025.06.27 1bb2c P P 584 380 2025.07.01 05:48:18.517 2025.07.01 05:48:19.101 2025.07.01 04:43:58.679 2025.07.01 04:43:59.059
2 5.0.3.1674 2025.06.26 d366d P P 577 399 2025.06.27 05:49:19.835 2025.06.27 05:49:20.412 2025.06.27 04:44:56.365 2025.06.27 04:44:56.764
3 5.0.3.1673 2025.06.25 f0e1f P P 581 388 2025.06.26 05:55:52.591 2025.06.26 05:55:53.172 2025.06.26 04:50:35.454 2025.06.26 04:50:35.842
4 5.0.3.1668 2025.06.21 b8e22 P P 575 372 2025.06.25 10:39:35.208 2025.06.25 10:39:35.783 2025.06.25 09:34:51.210 2025.06.25 09:34:51.582
5 5.0.3.1667 2025.06.15 4374a P P 580 452 2025.06.21 05:40:03.298 2025.06.21 05:40:03.878 2025.06.21 04:33:53.991 2025.06.21 04:33:54.443
6 5.0.3.1666 2025.06.14 97178 P P 602 372 2025.06.15 06:08:24.728 2025.06.15 06:08:25.330 2025.06.15 05:02:40.461 2025.06.15 05:02:40.833
7 5.0.3.1665 2025.06.11 d8b62 P P 627 373 2025.06.14 06:06:11.885 2025.06.14 06:06:12.512 2025.06.14 05:00:22.697 2025.06.14 05:00:23.070
8 5.0.3.1661 2025.06.10 cfcf0 P P 577 396 2025.06.11 04:35:21.079 2025.06.11 04:35:21.656 2025.06.11 03:29:53.066 2025.06.11 03:29:53.462
9 5.0.3.1660 2025.06.07 db691 P P 604 375 2025.06.10 04:35:47.483 2025.06.10 04:35:48.087 2025.06.10 03:30:39.667 2025.06.10 03:30:40.042
10 5.0.3.1659 2025.05.28 f4c0f P P 576 377 2025.06.06 04:31:50.236 2025.06.06 04:31:50.812 2025.06.06 03:27:04.624 2025.06.06 03:27:05.001

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