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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 116803 | 2024-11-27 11:29 | 2025-03-22 0:37 | MySQL Server: Optimizer | Verified (218 days) | S5 | 8.0.40 | Any | Any | MySQL 8.0.33 is slower than MySQL 8.0.28 with queries using JOINS |
| 118585 | 2025-07-03 16:35 | 2025-07-04 6:42 | MySQL Server: Optimizer | Verified (11 days) | S5 | 8.0.39, 8.0.42, 8.4.5, 9.3.0 | Ubuntu (Ubuntu 20.04.2) | Any | system variable "range_alloc_block_size" arouse different execution plan |
| 98770 | 2020-02-28 4:02 | 2020-03-03 15:05 | MySQL Server: Optimizer | Verified (1960 days) | S5 | 8.0.19 | Any | Any | Non-covering full index scan is always preferred over table scan for GROUP BY |
| 104083 | 2021-06-22 8:09 | 2022-09-22 3:56 | MySQL Server: Optimizer | Verified (1484 days) | S5 | 8.0.25 | Any | Any | MySQL optimizer chooses the wrong index due to 'range_uses_more_keyparts' |
| 87947 | 2017-10-03 4:00 | 2018-06-11 19:57 | MySQL Server: Optimizer | Verified (2836 days) | S5 | 5.7.19 | Any | Any | Optimizer chooses ref over range when access when range access is faster |
| 38550 | 2008-08-04 21:47 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (6116 days) | S5 | 5.0.60, 5.1 | Any | Any | multiple optimizer bugs for queries with references from preceding table |
| 105044 | 2021-09-26 15:32 | 2021-09-27 12:59 | MySQL Server: InnoDB storage engine | Verified (1387 days) | S5 | 8.0 | Any | Any | Added page szie judgment logic like btr_cur_optimistic_insert in btr_insert_into |
| 108863 | 2022-10-24 16:40 | 2024-03-15 8:49 | MySQL Server: Optimizer | Verified | S5 | 8.0.31 | Any | Any | different index picked when row is not found, marginally slower |
| 103869 | 2021-05-31 14:29 | 2021-06-03 10:21 | MySQL Server: Optimizer | Verified (1504 days) | S5 | 8.0.24, 8.0.25 | Any | Any | Duplicate computation of aggregate function when referred in HAVING clause |
| 116241 | 2024-09-26 10:05 | 2024-10-25 11:03 | MySQL Server: Optimizer | Verified (263 days) | S5 | 596f0d23 (9.0.0), 9.1.0 | Any | Any | Potential Performance Improvement on TPC-H |
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