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 4.0.6.3215 2025.06.25 6461d P P 623 464 2025.06.29 08:41:36.846 2025.06.29 08:41:37.469 2025.06.29 07:24:31.122 2025.06.29 07:24:31.586
2 4.0.6.3214 2025.06.21 e11f6 P P 578 362 2025.06.25 08:05:37.516 2025.06.25 08:05:38.094 2025.06.25 06:54:33.639 2025.06.25 06:54:34.001
3 4.0.6.3213 2025.06.14 f015c P P 597 414 2025.06.21 07:42:08.532 2025.06.21 07:42:09.129 2025.06.21 06:30:59.695 2025.06.21 06:31:00.109
4 4.0.6.3212 2025.06.11 bc50d P P 630 452 2025.06.14 08:51:08.853 2025.06.14 08:51:09.483 2025.06.14 07:29:03.890 2025.06.14 07:29:04.342
5 4.0.6.3208 2025.06.10 19fe3 P P 669 445 2025.06.11 07:29:34.350 2025.06.11 07:29:35.019 2025.06.11 06:08:44.425 2025.06.11 06:08:44.870
6 4.0.6.3207 2025.06.07 205ff P P 710 538 2025.06.10 07:32:32.082 2025.06.10 07:32:32.792 2025.06.10 06:10:14.998 2025.06.10 06:10:15.536
7 4.0.6.3206 2025.05.22 d7d10 P P 744 437 2025.06.06 07:38:15.996 2025.06.06 07:38:16.740 2025.06.06 06:16:01.201 2025.06.06 06:16:01.638

Elapsed time, ms. Chart for last 7 runs:

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