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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 121412 | 2026-09-30 18:08 | 2026-10-02 15:11 | MySQL Server: Replication | Verified | S3 | Any | Any | Contribution: Initialize binlog event scalar members | |
| 121411 | 2026-09-30 17:42 | 2026-10-01 5:09 | MySQL Server: Optimizer | Verified (1 day) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | Wrapping SUM(j) in CASE WHEN TRUE drops three rows from a DISTINCT ROLLUP query with a window function |
| 121410 | 2026-09-30 15:28 | 2026-10-02 17:22 | MySQL Server: Replication | Verified | S3 | 26.7.0 | Any | Any | CSA applier: Cached_event_payload leaks its event buffer when destroyed without decode() |
| 121404 | 2026-09-30 7:03 | 2026-10-01 5:07 | MySQL Server: Optimizer | Verified (1 day) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | Wrong result: row constructor comparison in WHERE returns no rows when a tuple element is a null-extended outer-join col |
| 121403 | 2026-09-30 5:56 | 2026-10-01 5:04 | MySQL Server: Optimizer | Verified (1 day) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | sql_buffer_result=ON causes a CASE-wrapped IN subquery to return an extra row |
| 121402 | 2026-09-30 3:07 | 2026-09-30 8:42 | MySQL Server: Optimizer | Verified (2 days) | S3 | 8.0.46 | Ubuntu (Ubuntu 22.04) | Any | NOT EXISTS subquery with tautological OR condition ignores NULL semantics |
| 121401 | 2026-09-30 2:15 | 2026-09-30 7:30 | MySQL Server: Optimizer | Verified (2 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 |
| 121399 | 2026-09-29 18:04 | 2026-09-30 7:26 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.7.2, 26.07 | Linux | Any | subquery_to_derived=on incorrectly filters rows for ALL over an empty subquery inside CASE |
| 121398 | 2026-09-29 17:27 | 2026-09-30 8:45 | MySQL Server: Optimizer | Verified (2 days) | S2 | 26.10.0 | Linux | Any | UNION loses a distinct DATE value after changing sql_mode on a partitioned table |
| 121395 | 2026-09-29 9:54 | 2026-09-30 7:16 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | BIGINT UNSIGNED column incorrectly matches a negative value in an IN (...) list when that value is derived from a non-co |
| 121394 | 2026-09-29 8:27 | 2026-09-30 7:12 | MySQL Server: DML | Verified (2 days) | S2 | 8.4.11, 9.7.2, 26.10.0-er | Any | Any | Buffered multi table update stores NULL instead of DEFAULT when asked for DEFAULT |
| 121393 | 2026-09-29 8:03 | 2026-10-02 10:58 | MySQL Server: GIS | Verified | S3 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Any | Any | Trigger prevents GEOMETRY NOT NULL guard from working |
| 121392 | 2026-09-29 8:00 | 2026-09-30 6:35 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | SELECT DISTINCT with a COLLATE-qualified WHERE predicate incorrectly drops matching rows when the optimizer uses an inde |
| 121391 | 2026-09-29 7:50 | 2026-09-30 6:28 | MySQL Server: GIS | Verified (2 days) | S3 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Any | Any | UPDATE IGNORE set geometry DEFAULT fails after DROP DEFAULT where INSERT IGNORE stores NULL |
| 121389 | 2026-09-29 1:05 | 2026-09-29 5:28 | MySQL Server: Optimizer | Verified (3 days) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Any | Any | COUNT(DISTINCT) returns a wrong (too small) result on a partitioned table when loose index scan is chosen |
| 121388 | 2026-09-28 14:46 | 2026-09-28 17:40 | MySQL Server: Optimizer | Verified (4 days) | S4 | Any | Any | Contribution: Add DELETE ... RETURNING clause support | |
| 121379 | 2026-09-28 8:25 | 2026-09-29 11:21 | MySQL Server: Optimizer | Verified (3 days) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | Identical UNION operands return different values when counting an EXCEPT ALL CTE |
| 121378 | 2026-09-28 7:54 | 2026-10-01 5:02 | MySQL Server: Optimizer | Verified (1 day) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | CASE WHEN TRUE changes the result of an identical WHERE predicate after SET NAMES binary |
| 121377 | 2026-09-28 7:07 | 2026-09-29 10:30 | MySQL Server: Optimizer | Verified (3 days) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.07 | Linux | Any | LIKE with an equivalent computed numeric pattern returns inconsistent results under utf16_unicode_ci |
| 121374 | 2026-09-27 18:59 | 2026-09-28 5:07 | MySQL Server: Optimizer | Verified (4 days) | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Queries using a JSON array index silently return incomplete results in joins (realworld bug) |
| 121368 | 2026-09-24 8:43 | 2026-09-24 11:00 | MySQL Server: GIS | Verified (8 days) | S3 | 8.4.11, 9.7.2, 26.7.0 | Any | Any | Possible to store an empty value into a non-NULL GEOMETRY column |
| 121367 | 2026-09-24 7:45 | 2026-09-24 10:44 | MySQL Server: DML | Verified (8 days) | S2 | 9.7.2 | Ubuntu (Used Docker Image for testing) | Any | ON DELETE CASCADE only deletes first child |
| 121360 | 2026-09-23 10:51 | 2026-09-24 8:27 | MySQL Server: DML | Verified (8 days) | S3 | 8.4.11, 9.7.2, 26.7.0 | Any | Any | No-op UPDATE assigning NULL to an already-NULL executes update, firing triggers etc |
| 121358 | 2026-09-23 7:46 | 2026-09-23 10:29 | MySQL Server: Optimizer | Verified (9 days) | S2 | 9.7.2 | Ubuntu | Any | Prepared statement does not reflect updated group_concat_max_len during execution |
| 121352 | 2026-09-22 17:01 | 2026-09-23 10:12 | MySQL Server: Documentation | Verified (9 days) | S2 | 8.0.46, 9.4.11, 9.7.2 | Ubuntu | Any | Prepared statement returns an unexpected WEEK() result after changing default_week_format |
| 121336 | 2026-09-21 10:42 | 2026-09-23 6:51 | MySQL Server: Optimizer | Verified (9 days) | S2 | 8.0.46, 8.4.11, 9.7.2 | Ubuntu (24.04) | x86 | SQL_BUFFER_RESULT causes aggregate row failing HAVING predicate to be returned |
| 121331 | 2026-09-21 5:05 | 2026-09-21 9:29 | MySQL Server: Optimizer | Verified (11 days) | S3 | 8.4.12, 9.7.3, 26.7.1 | Linux | Any | Optimizer discards the chosen range access and falls back to a table scan for antijoin / LEFT JOIN queries |
| 121328 | 2026-09-21 2:41 | 2026-09-21 12:26 | MySQL Server: Optimizer | Verified (11 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | `LAST_INSERT_ID(expr)` returns different results when the same non-NULL `LONGTEXT` value is passed directly or through a |
| 121326 | 2026-09-20 20:03 | 2026-09-21 12:29 | MySQL Server: Optimizer | Verified (11 days) | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | YEAR column compared to a non-integral constant returns and drops wrong rows |
| 121325 | 2026-09-20 20:01 | 2026-09-21 8:46 | MySQL Server: Optimizer | Verified (11 days) | S2 | 8.0.46, 8.4.11, 9.7.2, 26.10.0 | Any | Any | MIN()/MAX() with BETWEEN and a non-integral bound returns NULL while rows match |
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