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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 118536 | 2025-06-26 17:55 | 2025-09-21 20:45 | MySQL Server: Optimizer | Analyzing (468 days) | S2 | 8.0.40, 9.3.0 | Linux (RDS, Docker) | Any (Tested on x86_64 and aarch64) | Concurrent CTE queries cause erroneous missing temporary table errors |
| 86215 | 2017-05-08 13:35 | 2017-07-11 22:44 | MySQL Server: Optimizer | Analyzing (3376 days) | S5 | 8.0.1 | Any | Any | MySQL is much slower in 5.7 vs 5.6 |
| 120033 | 2026-03-11 15:01 | 2026-08-17 14:48 | MySQL Server: Optimizer | Documenting (211 days) | S3 | 8.4.8 | Any | Any | Inconsistent Results with SUBTIME(1, SYSDATE()) in HAVING Clause: UNIQUE Constraint Affects Optimizer Evaluation |
| 119343 | 2025-11-10 8:40 | 2026-05-28 1:13 | MySQL Server: Optimizer | Documenting (322 days) | S3 | 8.0 | Any | Any | NOT BETWEEN evaluates incorrectlywhen FROM_UNIXTIME operates on a FLOAT column |
| 106264 | 2022-01-24 16:33 | 2026-05-28 1:13 | MySQL Server: Optimizer | Documenting (1717 days) | S2 | 5.7 | Any | Any | Contribution by Tencent: Prevent badly stale rec_per_key for query optimization |
| 69350 | 2013-05-30 5:44 | 2026-05-28 1:12 | MySQL Server: Optimizer | In progress | S5 | 5.6 | Any | Any | performance regression between 5.5 and 5.6 for simple statement in routine loop |
| 106003 | 2021-12-29 20:06 | 2026-05-28 1:13 | MySQL Server: Optimizer | In progress (1743 days) | S3 | 8.0.27/5.7 | Any | Any | MySQL does not use indexes correctly for backwards ORDER BY conditions |
| 77340 | 2015-06-12 22:34 | 2026-05-28 1:13 | MySQL Server: Optimizer | In progress (3947 days) | S3 | 5.6.25, 5.7.7 | Any | Any | Optimizer chooses wrong index for LEFT JOIN query |
| 68825 | 2013-04-01 16:28 | 2026-05-28 1:12 | MySQL Server: Optimizer | In progress (4055 days) | S5 | 5.6.10 | Any | Any | performance regressions for single-threaded workloads |
| 24770 | 2006-12-02 0:37 | 2018-09-09 20:45 | MySQL Server: Optimizer | In progress (5680 days) | S5 | 5.1 | Any (all) | Any | update with subquery slow |
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