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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 (211 days) | S5 | 8.0.40 | Any | Any | MySQL 8.0.33 is slower than MySQL 8.0.28 with queries using JOINS |
| 73136 | 2014-06-27 16:34 | 2015-05-20 15:16 | MySQL Server: Optimizer | Verified (4026 days) | S3 | 5.6.12,5.6.19,5.5, 5.5.38, 5.5.20 | Any | Any | Index scan incorrectly selected over ref+sort leading to x1000 worse performance |
| 57024 | 2010-09-26 4:44 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5396 days) | S2 | 5.1 | Any | Any | Serious performance issue with an outer join |
| 76710 | 2015-04-15 14:48 | 2015-04-16 7:36 | MySQL Server: Tests | Verified (3736 days) | S3 | 5.7.7 | Any | Any | myisam_views-big fails |
| 95776 | 2019-06-13 2:34 | 2019-06-13 5:38 | MySQL Server: Optimizer | Verified (2217 days) | S3 | 5.7.15-log MySQL Community Server (GPL), 5.6.44, 5.7.26, 8.0.16 | CentOS | Any | About FUNCTION STDDEV_SAMP:Data only in different order |
| 55659 | 2010-07-31 11:39 | 2013-03-03 20:45 | MySQL Server: MyISAM storage engine | Verified | S3 | 5.1 bzr | Any | Any | Negative count(*) |
| 87339 | 2017-08-07 12:36 | 2018-10-30 8:39 | MySQL Server: Optimizer | Verified (2443 days) | S2 | 5.7 and 8.0, 8.0.13 | Any | Any | Duplicating the condition gives a different result set |
| 118312 | 2025-05-30 8:12 | 2025-05-30 10:32 | MySQL Server: DML | Verified (39 days) | S2 | 8.0.42, 8.4.5, 9.3.0 | Any | Any | Inconsistent results when evaluating `EXCEPT` or `INTERSECT` operations involving `NULL` |
| 50848 | 2010-02-02 18:51 | 2012-05-18 20:19 | MySQL Server: Backup | Patch queued (5629 days) | S3 | 5.4.4 | Windows | Any | BACKPORT: The backup_xpfm_compat_*_lctn2 tests fail in porting tree |
| 109354 | 2022-12-13 5:43 | 2022-12-13 7:15 | MySQL Server: Optimizer | Verified (938 days) | S3 | 8.0.21, 8.0.30, 8.0.31 | Any | Any | Numeric format change caused by DISTINCT, UNION and NULL |
| 109356 | 2022-12-13 7:01 | 2022-12-13 7:56 | MySQL Server: Optimizer | Verified (938 days) | S2 | 8.0.16, 8.0.31 | Any | Any | Extra line caused by DISTINCT and IS TRUE |
| 83921 | 2016-11-22 20:33 | 2017-01-04 7:22 | MySQL Server: Parser | Verified (3107 days) | S3 | 5.7.16 | CentOS (7) | Any | falsely Ambigous Column in On Duplicate Key Update using a subselect |
| 118585 | 2025-07-03 16:35 | 2025-07-04 6:42 | MySQL Server: Optimizer | Verified (4 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 |
| 110614 | 2023-04-05 8:32 | 2023-04-05 13:48 | MySQL Server: Optimizer | Verified (825 days) | S3 | 8.0 | Any | Any | Left join query with wrong result |
| 98770 | 2020-02-28 4:02 | 2020-03-03 15:05 | MySQL Server: Optimizer | Verified (1953 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 (1477 days) | S5 | 8.0.25 | Any | Any | MySQL optimizer chooses the wrong index due to 'range_uses_more_keyparts' |
| 112212 | 2023-08-29 16:01 | 2023-08-30 7:42 | MySQL Server: Optimizer | Verified (678 days) | S3 | 8.0.34 | Any | Any | Subquery to derived result mismatch(HASH JOIN/BNL JOIN result mismatch) |
| 115181 | 2024-05-31 2:11 | 2024-06-03 13:36 | MySQL Server: Performance Schema | Verified (400 days) | S3 | 8.0 | Any | Any | performance_schema.metadata_locks table doesn't show EXCLUSIVE locks correctly |
| 118544 | 2025-06-27 14:18 | 2025-06-30 6:43 | MySQL Server: Optimizer | Verified (8 days) | S3 | 9.2.0 , 9.3.0 | Linux | Any | A potential join operator bug |
| 12799 | 2005-08-25 9:46 | 2020-05-03 20:45 | MySQL Server: Optimizer | Verified (5760 days) | S3 | 5.0.10-log, 4.1.13a-log on win, 4.1 on RHES3.0 | Windows (windows xp) | Any | one result returned when change from summer time causes dup unique key recs |
| 74797 | 2014-11-11 15:19 | 2021-09-14 11:06 | MySQL Server: DML | Verified (3892 days) | S3 | 5.6.21/5.7 | Any | Any | create temporary table . select ..union.. select fails on read-only MySQL Server |
| 100985 | 2020-09-29 7:42 | 2020-09-29 9:18 | MySQL Server: Optimizer | Verified (1743 days) | S3 | 8.0.21, 5.7.31, 5.6.48 | Any | Any | Stored value for 0.001 is inconsistent, and casted to decimal is also different |
| 107821 | 2022-07-08 18:02 | 2022-07-20 6:36 | MySQL Server: Optimizer | Verified (1093 days) | S3 | 8.0, 8.0.29 | Any | Any | Result error : SQL with group by with rollup and const field |
| 109353 | 2022-12-13 5:24 | 2022-12-13 7:12 | MySQL Server: Optimizer | Verified (938 days) | S2 | 8.0.22, 8.0.31 | Any | Any | Extra line caused by DISTINCT and a certain number of '0' |
| 109367 | 2022-12-13 16:11 | 2022-12-14 5:58 | MySQL Server: Optimizer | Verified (937 days) | S3 | 5.7.22, 8.0.31 | Any | Any | value changed caused by DISTINCT and JOIN |
| 109406 | 2022-12-16 12:31 | 2022-12-16 12:38 | MySQL Server: Optimizer | Verified (935 days) | S3 | 5.7.11, 8.0.31 | Any | Any | Value change after relaxing WHERE condition |
| 111852 | 2023-07-23 12:46 | 2023-07-27 1:15 | MySQL Server: Optimizer | Verified (715 days) | S3 | 8.0.30, 8.0.34 | Any | Any | An incorrect number of records is returned |
| 39129 | 2008-08-29 17:32 | 2021-05-02 20:45 | MySQL Cluster: Cluster (NDB) storage engine | Verified (6081 days) | S3 | mysql-5.1-telco-6.3 | Any | Any | "SHOW CREATE VIEW" outputs additional columns, missing in test |
| 59187 | 2010-12-27 15:31 | 2018-09-09 20:45 | MySQL Server: Optimizer | Verified (5307 days) | S2 | 5.1.55, 5.6.2-m5 | Any | Any | Wrong result with NULL NOT IN subquery |
| 72089 | 2014-03-20 20:30 | 2014-03-22 6:19 | MySQL Server: DML | Verified (4126 days) | S3 | 5.5.8, 5.5.31, 5.5.38 | Any | Any | FOUND_ROWS returns 0 or garbage when used in non-trivial queries |
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