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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 121085 | 2026-08-12 21:49 | 2026-08-13 7:14 | MySQL Server: Optimizer | Verified | S3 | 8.0.46,8.4.11, 9.7.2 | Linux | ARM | A VIEW whose column is an expression drops a group in query |
| 121084 | 2026-08-12 20:45 | 2026-08-13 7:13 | MySQL Server: Optimizer | Verified | S3 | 8.0.46,8.4.11, 9.7.2 | Linux | ARM | VAR_SAMP() result depends on the query plan |
| 121083 | 2026-08-12 20:39 | 2026-08-13 6:28 | MySQL Server: Optimizer | Verified | S3 | 8.0.46,8.4.11, 9.7,2 | Linux | ARM | SELECT DISTINCT ... GROUP BY <same list> drops rows |
| 121082 | 2026-08-12 20:31 | 2026-08-13 6:31 | MySQL Server: Optimizer | Verified | S3 | 8.0.46, 8.4.11, 9.7.2 | Linux | ARM | `x NOT IN (<set-operation subquery>)` drops rows |
| 121079 | 2026-08-12 12:49 | 2026-08-12 17:31 | MySQL Server: Optimizer | Verified (1 day) | S2 | 8.4.9 | Linux | Any | Wrong result: quantified comparison subquery (>= ALL etc.) evaluates FALSE under double negation |
| 121076 | 2026-08-11 17:32 | 2026-08-12 7:17 | MySQL Websites: forums.mysql.com | Verified (1 day) | S3 | Any | Any | Outdated links on MySQL Forum. | |
| 121070 | 2026-08-11 0:30 | 2026-08-13 7:11 | MySQL Server: Optimizer | Verified | S3 | 8.0.46, 8.4.11, 9.7.2 | Linux | ARM | VAR_SAMP (and VAR_POP / STDDEV_SAMP) over BIGINT UNSIGNED values near 2^64 is insertion-order dependent |
| 121068 | 2026-08-07 22:26 | 2026-08-10 5:21 | MySQL Server: Optimizer | Verified (3 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Ubuntu | ARM | NO_BACKSLASH_ESCAPES + UNION + escaped apostrophe raises error |
| 121046 | 2026-08-01 0:46 | 2026-08-04 7:45 | MySQL Server: Optimizer | Verified (9 days) | S3 | 8.0.46, 8.4.10, 9.7.1 | Any | Any | HAVING applied after SELECT DISTINCT deduplication → order-dependent wrong (empty) result |
| 121041 | 2026-07-30 9:21 | 2026-08-06 4:29 | MySQL Server: Optimizer | Verified (7 days) | S5 | 8.0.46, 8.4.11, 9.7.2 | Linux | x86 | JOIN a table with a condition that does not belong to it |
| 121040 | 2026-07-30 9:06 | 2026-08-03 8:00 | MySQL Server: Optimizer | Verified (10 days) | 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) |
| 121036 | 2026-07-30 8:55 | 2026-08-03 8:13 | MySQL Server: Optimizer | Verified (10 days) | 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() |
| 121034 | 2026-07-30 7:54 | 2026-08-04 22:16 | Connector / NET | Verified (9 days) | S3 | 26.7.0 | Any | Any | Regression in ef core Contains using StringComparison.InvariantCultureIgnoreCase |
| 121033 | 2026-07-30 0:39 | 2026-08-03 8:51 | MySQL Server: Optimizer | Verified (10 days) | 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 (13 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 (13 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 (13 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 (13 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 |
| 121022 | 2026-07-28 13:01 | 2026-08-10 1:19 | MySQL Server: Installing | Verified (3 days) | S2 | 26.7.0 | MacOS (26.6) | ARM ((Apple Silicon)) | No MySQL PreferencePane in macOS installer package |
| 121020 | 2026-07-28 6:11 | 2026-07-29 9:47 | MySQL Server: Optimizer | Verified (15 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 | 2026-08-10 5:53 | MySQL Server: Optimizer | Verified (3 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 (15 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 (15 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 (17 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 (17 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 (17 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 (16 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 (10 days) | 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 | 2026-08-06 8:02 | MySQL Server: Optimizer | Verified (7 days) | 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 (10 days) | 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 |
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