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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 120902 | 2026-07-13 9:13 | 2026-07-14 13:06 | MySQL Server: Optimizer | Verified (89 days) | S5 | 9.7.1 | Linux (Ubuntu (22.04.4 LTS)) | x86 (x86_64, Intel(R) Xeon(R) Gold 5220) | Hash join AccessPath double-applies probe-side condition filtering |
| 121271 | 2026-09-12 2:30 | 2026-09-12 2:31 | MySQL Server: Optimizer | Open | S5 | 9.7.1 | Ubuntu (22.04.4 LTS) | x86 (Intel(R) Xeon(R) Gold 5220 CPU @ 2.20GHz) | Equivalent range-predicate rewrite exposes ORDER BY cost-ranking inversion: 2.9x higher-cost plan runs 2.85x faster |
| 121401 | 2026-09-30 2:15 | 2026-09-30 7:30 | MySQL Server: Optimizer | Verified (11 days) | S5 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Ubuntu (22.04.4 LTS) | x86 (Intel(R) Xeon(R) Gold 5220 CPU @ 2.20GHz) | Join-order enumeration and final AccessPath disagree on equality-derived filter cost, causing ~230x slowdown |
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