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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 121040 | 2026-07-30 9:06 | 2026-08-03 8:00 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | MacOS | ARM | derived condition pushdown across a set operation ignores collation equality, breaking predicate monotonicity (default) |
| 121038 | 2026-07-30 8:59 | 2026-08-03 7:46 | MySQL Server: Optimizer | Verified | S1 | 9.7.1 | MacOS | ARM | hypergraph_optimizer=on silently updates/deletes the wrong rows for single-table UPDATE/DELETE with ORDER BY when the WH |
| 121036 | 2026-07-30 8:55 | 2026-08-03 8:13 | MySQL Server: Optimizer | Verified | S3 | 8.0.46, 8.4.10, 9.7.1 | MacOS | ARM | Creating a secondary index on an ENUM column changes the result of MIN()/MAX() |
| 121033 | 2026-07-30 0:39 | 2026-08-03 8:51 | MySQL Server: Optimizer | Verified | S3 | 8.0.46, 8.4.10, 9.7.1, 26.7.0 | Ubuntu | ARM | Semijoin returns wrong row count over a LATERAL-derived-table view vs the base table |
| 121032 | 2026-07-30 0:14 | 2026-07-31 10:39 | MySQL Server: Optimizer | Verified (3 days) | S3 | 8.0.46, 8.4.10, 9.7.1, 26.7 | Ubuntu | ARM | `REGEXP` backslash character-class in a WHERE over a UNION ALL derived table drops all matching rows |
| 121030 | 2026-07-29 21:55 | 2026-07-31 7:56 | MySQL Server: Data Dictionary | Verified (3 days) | S2 | 8.0.42+ and 8.4.5+ | Any | Any | Upgrade fails with MY-013135 on tables with CHECK constraints/generated columns/partitions |
| 121028 | 2026-07-29 6:09 | 2026-07-31 11:49 | MySQL Server: Optimizer | Verified (3 days) | S2 | 9.7.1 | MacOS | ARM | Cardinality Check Granularity Error in subquery_to_derived |
| 121026 | 2026-07-29 3:26 | 2026-07-31 11:37 | MySQL Server: Optimizer | Verified (3 days) | S2 | 8.0.42, 8.0.46, 8.4.9, 9.7.2 | Any (official mysql Docker images, linux/arm64 and linux/amd64) | Any | Semijoin duplicate-weedout missing from plan: EXISTS + NOT EXISTS returns duplicate rows |
| 121020 | 2026-07-28 6:11 | 2026-07-29 9:47 | MySQL Server: Optimizer | Verified (5 days) | S2 | 9.7.1 | MacOS | ARM | subquery_to_derived transforms LIMIT 1 into MIN aggregate when subquery is inside derived table (= fast-path context fai |
| 121019 | 2026-07-28 6:04 | 2026-07-29 6:17 | MySQL Server: Optimizer | Verified (5 days) | S2 | 8.0.46, 8.4.10, 9.7.1 | MacOS | ARM | subquery_to_derived + semijoin=off produces wrong WHERE-clause EXISTS results with LIMIT (dual boundary interaction, sil |
| 121018 | 2026-07-28 5:43 | 2026-07-29 6:07 | MySQL Server: Optimizer | Verified (5 days) | S2 | 9.7.1 | MacOS | ARM | subquery_to_derived produces wrong EXISTS/NOT EXISTS results with LIMIT (silent corruption) |
| 121017 | 2026-07-28 5:06 | 2026-07-29 4:26 | MySQL Server: Optimizer | Verified (5 days) | S3 | 9.7.1 | MacOS | ARM | subquery_to_derived drops LIMIT 1 from non-equality scalar subqueries |
| 121013 | 2026-07-27 9:57 | 2026-07-27 14:00 | MySQL Server: Optimizer | Verified (7 days) | S3 | 9.7.1 | MacOS | ARM | subquery_to_derived causes row count mismatch with window function + LEFT JOIN |
| 121012 | 2026-07-27 9:55 | 2026-07-27 14:15 | MySQL Server: Optimizer | Verified (7 days) | S3 | 8.0.46, 8.4.10, 9.7.1 | MacOS | ARM | subquery_to_derived bypasses only_full_group_by check |
| 121011 | 2026-07-27 9:52 | 2026-07-27 14:18 | MySQL Server: Optimizer | Verified (7 days) | S3 | 8.0.46, 8.4.10, 9.7.1 | MacOS | ARM | subquery_to_derived causes wrong result with GROUP BY ... WITH ROLLUP |
| 121001 | 2026-07-23 16:12 | 2026-07-28 13:13 | MySQL Server: Optimizer | Verified (6 days) | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Incorrect evaluation of NOT (A AND NOT A AND (A IS NOT NULL)) drops NULL rows due to invalid ternary logic simplificatio |
| 120998 | 2026-07-23 15:39 | 2026-08-03 10:55 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent evaluation of NOT ((CASE WHEN ... LIKE a) OR a) on SMALLINT ZEROFILL UNIQUE column causes duplicate rows |
| 120997 | 2026-07-23 15:31 | 2026-08-03 8:46 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Incorrect index lookup range pushdown/coercion for IN (COALESCE(decimal, string)) on integer indexed column violates TLP |
| 120994 | 2026-07-23 14:09 | 2026-08-03 8:57 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent JOIN result when comparing TEXT and DECIMAL columns with and without UNIQUE index |
| 120992 | 2026-07-23 13:06 | 2026-08-03 6:53 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent comparison behavior between CHARSET() string expression vs CTAS materialized column against hex literal (0x |
| 120991 | 2026-07-23 12:59 | 2026-08-03 6:50 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent comparison behavior between integer and ADDDATE(DATETIME, 0) expression vs CTAS materialized column |
| 120990 | 2026-07-23 12:50 | 2026-08-03 6:49 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent boolean evaluation between MAX(ENUM) aggregate expression and CTAS materialized ENUM column |
| 120988 | 2026-07-23 12:31 | 2026-08-03 6:40 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.10, 9.7.1 | Any | Any | Redundant DISTINCT in UNION, INTERSECT and EXCEPT branches is not eliminated |
| 120987 | 2026-07-23 12:16 | 2026-07-31 11:03 | MySQL Server: Optimizer | Verified (3 days) | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent boolean evaluation of LEAST(TIME, VARCHAR) between dynamic calculation and CTAS materialized column |
| 120986 | 2026-07-23 12:12 | 2026-07-30 6:30 | MySQL Server: Optimizer | Verified (4 days) | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent comparison result between JSON scalar and dynamic comparison expression vs CTAS materialized boolean/intege |
| 120985 | 2026-07-23 10:39 | 2026-07-29 11:30 | MySQL Server: Optimizer | Verified (5 days) | S2 | 9.6.0,9.7.0 | Ubuntu | Any | ENUM comparison with a CHAR() binary-string expression changes after CREATE TABLE AS SELECT materialization |
| 120984 | 2026-07-23 10:19 | 2026-07-30 6:55 | MySQL Server: Optimizer | Verified (4 days) | S2 | 8.0.46, 8.4.10, 9.7.1 | Ubuntu | Any | Inconsistent type metadata and display for COALESCE() on a BIT column before and after CREATE TABLE AS SELECT |
| 120983 | 2026-07-23 10:07 | 2026-07-29 10:20 | MySQL Server: Optimizer | Verified (5 days) | S2 | 9.7.1 | Ubuntu | Any | Wrong result for NOT IN subquery on a BIT column while an equivalent materialized query returns the expected row |
| 120980 | 2026-07-23 2:09 | 2026-08-03 8:23 | MySQL Server: DML | Verified | S3 | 8.0.46 | Any | Any | DATE column vs INTEGER column comparison returns different results with column reference vs literal value |
| 120976 | 2026-07-22 4:45 | 2026-07-22 9:34 | MySQL Server: Optimizer | Verified (12 days) | S1 | 9.3 | Any | Any | LATERAL Derived Table Causes IFNULL to Ignore Inner Table Column, Returning NULL for All Rows |
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