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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 120917 | 2026-07-14 10:34 | 2026-07-15 5:23 | MySQL Server: Optimizer | Verified (1 day) | S3 | 9.5.0 | Any | Any | Adding OR FALSE to an IN-subquery predicate changes the query result |
| 120900 | 2026-07-13 8:03 | 2026-07-15 7:51 | MySQL Server: Optimizer | Open (1 day) | S2 | 9.5.0 | Any | Any | Redundant OR FALSE Predicate Causes a Much Slower Plan |
| 120898 | 2026-07-11 20:40 | 2026-07-11 20:40 | MySQL Workbench | Open | S3 | MySQL Workbench 8.0.47 | Windows (11) | Any | MySQL Workbench Table Data Import Wizard imports 0 records although CSV preview displays data |
| 120870 | 2026-07-06 5:20 | 2026-07-07 6:30 | MySQL Server: Optimizer | Verified (9 days) | S5 | 9.7.1 | Ubuntu (22.04.4 LTS) | x86 (x86_64, Intel(R) Xeon(R) Gold 5220) | Hypergraph misses BETWEEN equality, causing 100x slowdown |
| 120869 | 2026-07-05 10:46 | 2026-07-06 5:40 | MySQL Server: Optimizer | Verified (10 days) | S5 | 9.7.1 | Ubuntu (22.04.4 LTS) | x86 (x86_64, Intel(R) Xeon(R) Gold 5220) | Optimizer chooses 26x slower join order due to fanout misestimation despite histograms |
| 120821 | 2026-07-01 8:16 | 2026-07-08 11:11 | MySQL Server: Optimizer | Verified (8 days) | S2 | 9.5.0 | Any | Any | SELECT DISTINCT makes an equivalent query ~170x faster on round90.t1 in MySQL 9.5.0 |
| 120809 | 2026-06-29 7:31 | 2026-07-02 14:07 | MySQL Server: Optimizer | Verified (14 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 |
| 120808 | 2026-06-29 7:13 | 2026-06-29 7:13 | MySQL Cluster: Cluster (NDB) storage engine | Open | S2 | MySQL NDB Cluster 9.3.0-cluster | Any | Any | NDB SQL/API node aborts in Ndb_binlog_setup::setup() after NDB schema UUID differs from local DD schema UUID during rest |
| 120793 | 2026-06-27 11:52 | 2026-07-08 9:30 | MySQL Server: Optimizer | Verified (8 days) | S5 | 9.7.1 | Ubuntu (22.04.4 LTS) | x86 (Intel(R) Xeon(R) Gold 5220 CPU @ 2.20GHz) | Default heuristic pruning misses join-connected prefix in 3-table query, causing ~40x slower plan |
| 120772 | 2026-06-25 10:27 | 2026-07-08 9:03 | MySQL Server: Optimizer | Verified (8 days) | S5 | 9.7.1 and 8.0.31 | Ubuntu (22.04.4 LTS) | x86 (Intel(R) Xeon(R) Gold 5220 CPU @ 2.20GHz) | UPDATE HISTOGRAM causes optimizer to use stale cardinalities and miss faster join order |
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