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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 121226 | 2026-09-03 7:52 | 2026-09-03 13:01 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.7.2 | Any | Any | WHERE int_col = CAST(decimal AS DOUBLE) index access stores the rounded key and returns wrong rows (literal path correct |
| 121222 | 2026-09-03 7:43 | 2026-09-03 12:31 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.7.2 | Any | Any | GREATEST/LEAST mixed-type aggregation produces illegal packed dates (16383-15-31 and 7 more) |
| 121221 | 2026-09-03 7:42 | 2026-09-03 12:27 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.7.2 | Any | Any | BIT column vs BIT literal: comparator path split (column numeric, literal byte-string) |
| 121220 | 2026-09-03 7:41 | 2026-09-03 12:22 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.7.2 | Any | Any | One DATE constant in an IN list silently disables all other elements ('abc' IN ('abc', DATE'...') cannot find 'abc') |
| 121219 | 2026-09-03 7:40 | 2026-09-03 12:15 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.7.2 | Any | Any | TIME column BETWEEN contradicts its decomposition: both single-sided =1, AND =1, yet BETWEEN =0 |
| 121218 | 2026-09-03 7:36 | 2026-09-03 12:04 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.7.2 | Any | Any | TIME column vs TIMESTAMP/DATETIME constant: the constant's date part is silently discarded |
| 121216 | 2026-09-03 7:28 | 2026-09-03 10:13 | MySQL Server: Optimizer | Verified (1 day) | S3 | 8.4 | Any | Any | VARCHAR column vs DATE constant: failed conversion silently acts as a "smallest sentinel" |
| 121214 | 2026-09-03 7:23 | 2026-09-03 9:16 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.7.2 | Any | Any | TIME column compared with a >= 10^10 integer constant returns inverted results (column vs literal context semantic split |
| 121213 | 2026-09-02 15:24 | 2026-09-04 5:11 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.11, 9.7.2 | Linux | Any | UNIQUE const-table plan evaluates `GROUPING()=1` before ROLLUP and drops the super-aggregate row |
| 121208 | 2026-09-02 9:04 | 2026-09-04 8:53 | MySQL Server: Optimizer | Verified | S3 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Materializing a shared `UNION` CTE changes a scalar `ORDER BY ... LIMIT` result |
| 121207 | 2026-09-02 9:03 | 2026-09-04 8:43 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Materializing an `EXISTS` input changes a `RIGHT JOIN` result |
| 121206 | 2026-09-02 9:01 | 2026-09-04 7:49 | MySQL Server: Optimizer | Verified | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Materializing a computed derived column changes a false `HAVING` result |
| 121188 | 2026-08-29 13:30 | 2026-09-01 4:50 | MySQL Server: Optimizer | Verified (3 days) | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Materializing an `IN` subquery changes a `UNION`/`RIGHT JOIN` result |
| 121187 | 2026-08-29 13:28 | 2026-09-01 4:53 | MySQL Server: Optimizer | Verified (3 days) | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Materializing a `TIME` expression changes comparison with `DATETIME` literals |
| 121184 | 2026-08-28 8:45 | 2026-09-01 4:59 | MySQL Server: Optimizer | Verified (3 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Adding an unrelated element to a mixed-type temporal IN list flips the match result of other elements |
| 121183 | 2026-08-28 8:06 | 2026-08-31 5:50 | MySQL Server: Optimizer | Verified (4 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Single-element IN (rewritten to =) errors on non-convertible string, multi-element IN silently returns FALSE — behavior |
| 121181 | 2026-08-28 8:03 | 2026-08-31 5:41 | MySQL Server: Optimizer | Verified (4 days) | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Temporal BETWEEN returns FALSE instead of NULL when LHS->temporal conversion fails (uninitialized Time_val/Date_val comp |
| 121179 | 2026-08-27 18:23 | 2026-08-28 5:01 | MySQL Server: Optimizer | Verified (7 days) | S2 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Framed window functions return wrong results when windowing steps are skipped (const plan, implicit grouping) |
| 121171 | 2026-08-26 2:42 | 2026-08-26 5:54 | MySQL Server: Optimizer | Verified (9 days) | S2 | 9.7.2, 26.07 | Any | Any | Hypergraph optimizer loses the LATERAL dependency of a materialized derived table under ref/index access |
| 121157 | 2026-08-23 6:37 | 2026-08-25 9:36 | MySQL Server: Optimizer | Verified (10 days) | S1 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Timezone-dependent generated column breaks UNIQUE and makes table unrestorable |
| 121152 | 2026-08-22 6:09 | 2026-08-25 6:46 | MySQL Server: Optimizer | Verified (10 days) | S3 | 9.2 | Any | Any | CTE merge incorrectly loses the first alias when a BIT column is projected twice with different aliases |
| 121149 | 2026-08-21 13:17 | 2026-08-21 20:37 | MySQL Server: Optimizer | Verified (14 days) | S2 | 9.7.1 | Any | Any | MySQL temporal implicit conversion changes `TIMEDIFF` predicate results after materialization |
| 121147 | 2026-08-21 4:11 | 2026-08-21 20:40 | MySQL Server: Optimizer | Verified (14 days) | S3 | 9.7.1 | Ubuntu (22.04) | Any | QUOTE() incorrectly treated as null-rejecting in outer joins |
| 121145 | 2026-08-20 11:33 | 2026-08-21 6:44 | MySQL Server: Optimizer | Verified (14 days) | S3 | 8.0 | Ubuntu (22.04) | Any | COUNT(DISTINCT UUID()) / RAND() returns 1 under implicit grouping |
| 121141 | 2026-08-20 1:50 | 2026-08-20 5:26 | MySQL Server: Optimizer | Verified (15 days) | S1 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | group skip scan for deduplication collapses each group to one row before a semijoin/antijoin condition on a later index |
| 121113 | 2026-08-18 9:22 | 2026-08-19 14:23 | MySQL Server: Optimizer | Verified (16 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | `JSON_QUOTE()` metadata overflow truncates valid output |
| 121112 | 2026-08-18 9:20 | 2026-08-19 14:17 | MySQL Server: Optimizer | Verified (16 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Character-set conversion metadata overflow causes silent data loss |
| 121111 | 2026-08-18 9:15 | 2026-08-19 8:24 | MySQL Server: Optimizer | Verified (16 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Any | Any | Hex Result Metadata Uint32 Wrap |
| 121102 | 2026-08-17 1:29 | 2026-08-21 14:11 | MySQL Server: InnoDB storage engine | Verified (14 days) | S2 | 8.0.46,8.4.11,9.7.2, 26.10.0 | Any | Any | INPLACE rebuild may corrupt long-prefix secondary indexes |
| 121100 | 2026-08-16 22:04 | 2026-08-19 5:22 | MySQL Server: Optimizer | Verified (16 days) | S3 | 8.0.46, 8.4.11, 9.7.2 | Linux | ARM | Merged `CAST(col AS CHAR) COLLATE utf8mb4_0900_bin` makes col = UPPER(col) return wrong result |
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