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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 120313 | 2026-04-21 17:11 | 2026-04-22 4:43 | MySQL Server: Optimizer | Verified | S1 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Wrong result when only GROUP BY key order is changed in a join query with nested window-function input |
| 120312 | 2026-04-21 16:58 | 2026-04-22 4:40 | MySQL Server: Optimizer | Verified | S2 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Wrong result for MIN(TIME) UNION ALL DATE after view extraction |
| 120311 | 2026-04-21 16:52 | 2026-04-22 4:38 | MySQL Server: Optimizer | Verified | S2 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Wrong result for grouped SUM(DISTINCT ...) with DENSE_RANK() after view extraction |
| 120310 | 2026-04-21 16:45 | 2026-04-22 4:34 | MySQL Server: Optimizer | Verified | S2 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Wrong result for MAX(BIT(8)) UNION ALL BLOB after view extraction in a window-function workload |
| 120308 | 2026-04-21 14:03 | 2026-04-22 4:27 | MySQL Server: Optimizer | Verified | S2 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Wrong result for string-vs-`BIT` comparison in a window-function query |
| 120307 | 2026-04-21 14:02 | 2026-04-22 4:23 | MySQL Server: Optimizer | Verified | S2 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Wrong result for `<= ANY (subquery)` in a window-function query |
| 120306 | 2026-04-21 2:23 | 2026-04-21 5:49 | MySQL Server: DDL | Verified (1 day) | S3 | 8.0.43 | Any | Any | ALGORITHM=INPLACE allows creating a VIRTUAL GENERATED COLUMN with invalid expressions for existing data, causing subsequ |
| 120302 | 2026-04-20 9:51 | 2026-04-20 11:26 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Any | Any | Inconsistent results between VIEW and CTE involving YEAR(DATETIME), UNION, and JOIN. |
| 120300 | 2026-04-20 9:02 | 2026-04-20 11:03 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Any (Observed on Linux via the `mysql:9.6` ) | Any | Window function logic mismatch across engines |
| 120299 | 2026-04-20 9:00 | 2026-04-20 10:41 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | mismatch in `DELETE ... EXISTS` under window function query |
| 120297 | 2026-04-20 8:44 | 2026-04-20 10:04 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.32 | Any | Any | query_term.cc:320 assert(false) crash — UNION query triggers unhandled AccessPath |
| 120296 | 2026-04-20 7:50 | 2026-04-20 9:24 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Ubuntu (Ubuntu 20.04.4 LTS) | x86 (Intel(R) Xeon(R) Platinum 8358P @ 2.60GHz (64 Cores, 96MB L3 Cache)) | Materialized Correlated EXISTS Loses Implicit VARCHAR-to-YEAR Coercion,Causing Plan-Dependent Result Divergence |
| 120294 | 2026-04-19 17:16 | 2026-04-20 8:38 | MySQL Server: Optimizer | Verified (2 days) | S3 | 8.0.45 | Any | Any | Inconsistent fractional seconds precision (FSP) for TIME function results between VIEW and CTE |
| 120293 | 2026-04-19 17:10 | 2026-04-20 8:33 | MySQL Server: Optimizer | Verified (2 days) | S1 | 8.0.45 | Any | Any | Query result inconsistency between VIEW and CTE involving a UNION of scalar aggregation and grouped aggregation |
| 120292 | 2026-04-19 17:01 | 2026-04-20 8:27 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Any | Any | Inconsistent results between VIEW and CTE involving IN subquery and RIGHT JOIN |
| 120291 | 2026-04-19 16:45 | 2026-04-20 8:23 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Any | Any | Inconsistent results between VIEW and CTE involving EXISTS subquery and LEFT JOIN |
| 120289 | 2026-04-19 14:35 | 2026-04-20 8:13 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Mismatch in indexed `IN` under windows function query |
| 120288 | 2026-04-19 14:29 | 2026-04-20 8:04 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Linux (Observed on Linux via the `mysql:9.6` ) | Any | Window function logic mismatch in indexed `NOT IN` |
| 120286 | 2026-04-19 5:14 | 2026-04-20 7:53 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Any | Any | `SUM(DISTINCT pk)` returns `NULL` with a window function when a secondary index is used for group-by scanning |
| 120284 | 2026-04-18 15:46 | 2026-04-20 7:33 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Ubuntu (Ubuntu 20.04.4 LTS) | x86 (Intel(R) Xeon(R) Platinum 8358P @ 2.60GHz (64 Cores, 96MB L3 Cache)) | Materialized `IN (subquery)` Loses VARCHAR-to-YEAR Coercion,Causing Plan-Dependent Result Divergence |
| 120279 | 2026-04-17 7:23 | 2026-04-17 14:09 | MySQL Server: Optimizer | Verified (5 days) | S3 | 8.0.43 (MySQL Community Server - GPL) | Any | Any | Severe performance degradation with window function + joins (works fast in PostgreSQL/DuckDB/TiDB) |
| 120275 | 2026-04-16 7:10 | 2026-04-20 6:51 | MySQL Server: Optimizer | Verified (2 days) | S2 | 8.0.45 | Ubuntu (Ubuntu 20.04.4 LTS) | x86 (Intel(R) Xeon(R) Platinum 8358P @ 2.60GHz (64 Cores, 96MB L3 Cache)) | DATE Index Lookup Loses Existing JOIN Matches Even with Explicit CAST(MEDIUMTEXT AS DATE), Causing S1/S2 Divergence |
| 120273 | 2026-04-15 15:39 | 2026-04-16 22:33 | MySQL Server: Memory storage engine | Verified (6 days) | S2 | 8.0.45 | Ubuntu (22.04) | x86 | Incorrect COUNT result when "SET SESSION internal_tmp_mem_storage_engine = MEMORY" is used |
| 120271 | 2026-04-15 10:54 | 2026-04-16 21:39 | MySQL Server: Optimizer | Verified (6 days) | S3 | 8.0.43 (MySQL Community Server - GPL) | Any (Docker container) | Any (x86_64) | Logic error: EXISTS subquery treated as constant TRUE yields different result than literal TRUE |
| 120270 | 2026-04-15 9:49 | 2026-04-16 21:20 | MySQL Server: Optimizer | Verified (6 days) | S1 | 8.0.45 | Any | Any | Incorrect result for INTERSECT ALL with semantically equivalent EXCEPT operands when right EXCEPT left operand is wrap |
| 120265 | 2026-04-14 8:24 | 2026-04-14 9:47 | MySQL Server: Optimizer | Verified (8 days) | S1 | 9.6.0 | Any | Any | Query returns with UNION, INTERSECT ALL and Derived SELECT DISTINCT |
| 120263 | 2026-04-14 5:30 | 2026-04-14 10:56 | MySQL Server: JSON | Verified (8 days) | S2 | 8.0.45 | Any | Any | Inconsistent results for query with JSON_CONTAINS and CAST(... AS SIGNED) |
| 120261 | 2026-04-14 2:52 | 2026-04-14 4:32 | MySQL Server: Optimizer | Verified (8 days) | S2 | 8.4.8 | Any | Any | CREATE VIEW materialization changes a key scalar output |
| 120260 | 2026-04-14 2:48 | 2026-04-14 4:42 | MySQL Server: Optimizer | Verified (8 days) | S2 | 8.4.8 | Any | Any | CREATE VIEW materialization changes byte-valued outputs after aggregate or window processing |
| 120259 | 2026-04-14 2:43 | 2026-04-14 4:49 | MySQL Server: Optimizer | Verified (8 days) | S2 | 8.4.8 | Any | Any | CREATE VIEW materialization changes byte-valued UNION results |
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