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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 120854 | 2026-07-03 5:49 | 2026-07-03 10:15 | MySQL Server: Optimizer | Verified (1 day) | S2 | 9.6.0,9.7.0 | Ubuntu | Any | Wrong result with COALESCE(YEAR, 0), arithmetic and window function in VIEW/CTE |
| 120853 | 2026-07-03 5:42 | 2026-07-03 10:12 | MySQL Server: Optimizer | Verified (1 day) | S2 | 9.6.0,9.7.0 | Ubuntu | Any | Wrong result with LOWER(JSON), UPPER() comparison and utf8mb4_bin collation in VIEW/CTE |
| 120852 | 2026-07-03 5:32 | 2026-07-03 10:09 | MySQL Server: Data Types | Verified (1 day) | S2 | 9.6.0,9.7.0 | Ubuntu | Any | Wrong result with YEAR() over DATE after UNION: value displayed as 0000 but satisfies vc > 1970 |
| 120850 | 2026-07-03 3:32 | 2026-07-03 9:57 | MySQL Server: Optimizer | Verified (1 day) | S5 | 9.7.1 | Linux (Ubuntu (22.04.4 LTS)) | x86 (x86_64, Intel(R) Xeon(R) Gold 5220) | Optimizer misses impossible INNER JOIN condition with IS NULL and normal equality |
| 120848 | 2026-07-02 17:43 | 2026-07-03 16:34 | MySQL Server: Data Types | Verified (1 day) | S2 | 9.6.0 | Ubuntu | Any | Inconsistent comparison behavior for MAKETIME() expression between VIEW/CTE and TEMPORARY TABLE |
| 120847 | 2026-07-02 17:28 | 2026-07-03 9:22 | MySQL Server: Data Types | Verified (1 day) | S2 | 9.6.0 | Ubuntu | Any | Inconsistent comparison behavior for ENUM-derived CASE expression between VIEW/CTE and TEMPORARY TABLE |
| 120846 | 2026-07-02 17:00 | 2026-07-03 7:49 | MySQL Server: Optimizer | Verified (1 day) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with CTE, AVG(NUMERIC(62)), MIN() and derived table join |
| 120845 | 2026-07-02 16:55 | 2026-07-03 7:44 | MySQL Server: Optimizer | Verified (1 day) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with CTE, nested STDDEV_POP(), GROUP BY and UNION |
| 120843 | 2026-07-02 16:43 | 2026-07-03 9:14 | MySQL Server: Optimizer | Verified (1 day) | S2 | 9.6.0 | Ubuntu | Any | VIEW and CTE return wrong results with YEAR(), UNION and uncorrelated EXISTS subquery |
| 120842 | 2026-07-02 16:34 | 2026-07-02 20:22 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with CTE, DISTINCT, NULL vs empty string, GROUP_CONCAT() and UNION |
| 120841 | 2026-07-02 16:26 | 2026-07-02 20:14 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with CTE, ORDER BY LIMIT, GROUP BY, SUM() and outer UNION |
| 120840 | 2026-07-02 16:20 | 2026-07-02 20:09 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Ubuntu | Any | VIEW and equivalent CTE differ when LOWER(JSON_TYPE(...)) is compared with JSON_TYPE() result in a UNION query |
| 120839 | 2026-07-02 15:37 | 2026-07-02 20:04 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with CTE, YEAR column, scalar subquery, outer UNION and MAX() aggregate |
| 120838 | 2026-07-02 15:28 | 2026-07-02 19:57 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with CTE, UNION, BIT column and NOT IN subquery containing NULL |
| 120837 | 2026-07-02 15:20 | 2026-07-02 19:44 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Any | Any | Wrong result with CTE, UNION ALL, GROUP BY/HAVING and LOCATE('', column) |
| 120836 | 2026-07-02 15:08 | 2026-07-02 19:35 | MySQL Server: Optimizer | Verified (2 days) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with VIEW, UNION, MAKETIME(), MEDIUMTEXT and NOT IN subquery containing NULL |
| 120834 | 2026-07-02 10:38 | 2026-07-02 19:03 | MySQL Server: Optimizer | Verified (2 days) | S1 | 9.7.1 | Any | Any | AVG on Large DOUBLE Values Returns Inconsistent Results Across Execution Paths (Index Scan vs. Temporary Table) |
| 120833 | 2026-07-02 10:32 | 2026-07-03 1:33 | MySQL Server: Optimizer | Verified (1 day) | S1 | 9.7.1 | Any | Any | Index Lookup Truncates DOUBLE to BIGINT for IF(NULL, …) and GREATEST(string, double) in IN Conditions |
| 120832 | 2026-07-02 10:02 | 2026-07-02 18:06 | MySQL Server: Optimizer | Verified (2 days) | S1 | 9.7.1 | Any | Any | WITH ROLLUP Super‑Aggregate Row Missing in Zero Input Rows Short‑Circuit Path |
| 120830 | 2026-07-02 3:11 | 2026-07-02 9:34 | MySQL Server: Optimizer | Verified (2 days) | S5 | 9.7.1 | Ubuntu (22.04.4 LTS) | x86 (x86_64, Intel(R) Xeon(R) Gold 5220) | Optimizer chooses 2800x slower join order despite lower-cost JOIN_PREFIX plan |
| 120809 | 2026-06-29 7:31 | 2026-07-02 14:07 | MySQL Server: Optimizer | Verified (2 days) | S5 | 9.7.1 and 8.0.31 | Ubuntu (22.04.4 LTS) | Any | Optimizer misses DISTINCT early-out and chooses 40M-row hash join Cartesian product |
| 120803 | 2026-06-28 13:20 | 2026-06-29 2:51 | MySQL Server: Optimizer | Verified (5 days) | S1 | 9.6 | Any | Any | CTE Materialization Causes LEAST to Degenerate from String Comparison to Numeric Comparison |
| 120797 | 2026-06-27 15:18 | 2026-07-02 13:29 | MySQL Server: Optimizer | Verified (2 days) | S5 | 9.7.1 | Ubuntu (22.04.4 LTS) | x86 | Poor plan for DISTINCT Cartesian product: hash join materializes full product while NO_BNL is about 50x faster |
| 120782 | 2026-06-25 20:24 | 2026-06-26 4:47 | MySQL Server: Optimizer | Verified (8 days) | S2 | 9.7.0 | Linux | Any | Derived merge: temporal expr ignores NULL-extended LEFT JOIN row |
| 120780 | 2026-06-25 20:19 | 2026-06-26 7:00 | MySQL Server: DML | Verified (8 days) | S2 | 9.7.0 | Linux | Any | Nested DATE_ADD on a date string adds spurious 00:00:00, drops WHERE rows |
| 120777 | 2026-06-25 19:24 | 2026-06-26 6:29 | MySQL Server: Replication | Verified (8 days) | S3 | 8.4.9, 9.7.0 | Linux | Any | Replica crash on short Format_description_event post_header_len |
| 120773 | 2026-06-25 11:54 | 2026-06-26 10:38 | MySQL Server: Optimizer | Verified (8 days) | S5 | 9.7.1 | Ubuntu (Ubuntu (22.04.4 LTS)) | x86 (Intel(R) Xeon(R) Gold 5220 CPU @ 2.20GHz) | Hash join misses DISTINCT ORDER BY LIMIT early termination |
| 120737 | 2026-06-22 8:28 | 2026-06-22 10:31 | MySQL Server: Optimizer | Verified (12 days) | S1 | 8.0.45 | Any | Any | Inconsistent CAST Handling of Out-of-Range TEXT Values in Single Table vs. View/Join Paths |
| 120734 | 2026-06-20 14:02 | 2026-06-22 9:59 | MySQL Server: Optimizer | Verified (12 days) | S1 | 8.0.45 | Any | Any | Constant Table Optimization Ignores WHERE Condition for MAX(DISTINCT), Returning Incorrect Non-NULL Value |
| 120733 | 2026-06-20 13:38 | 2026-06-22 9:29 | MySQL Server: Optimizer | Verified (12 days) | S1 | MySQL 9.6 | Any | Any | DISTINCTROW with ROW_NUMBER() Derived Table and GROUP BY Causes Duplicate Removal Key to Miss a Non‑Aggregate Column, Me |
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