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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 87339 | 2017-08-07 12:36 | 2018-10-30 8:39 | MySQL Server: Optimizer | Verified (2882 days) | S2 | 5.7 and 8.0, 8.0.13 | Any | Any | Duplicating the condition gives a different result set |
| 79656 | 2015-12-16 4:00 | 2015-12-16 7:59 | MySQL Server: DML | Verified (3931 days) | S3 | 5.7.8, 5.5.48, 5.6.28, 5.7.10 | Any | Any | "'2' + 0.0, group_concat('2') + 0.0" are returning different result |
| 75668 | 2015-01-28 16:21 | 2015-01-28 20:10 | MySQL Server: Optimizer | Verified (4253 days) | S2 | 5.6.22/5.7 | FreeBSD (FreeBSD 8.4) | Any | Use of Distinct, Group_concat, and Group by together produces 1 NULL row result. |
| 69515 | 2013-06-19 14:55 | 2013-06-19 15:11 | MySQL Server: Options | Verified (4841 days) | S3 | 5.1, 5.5, 5.6, 5.7 | Any | Any | group_concat_max_len >= 4Gb does not work |
| 80224 | 2016-02-01 19:13 | 2016-02-15 9:00 | MySQL Server: Optimizer | Verified (3870 days) | S3 | 5.5.46, 5.6.28, 5.7.11 | Any | Any | CONCAT_WS duplication of arguments when used in conjunction with HAVING |
| 100822 | 2020-09-12 14:39 | 2023-02-20 1:47 | MySQL Server: DML | Verified (1975 days) | S3 | 8.0/5.7/5.6 | Red Hat (7.4) | Any | the result of group_concat(field1 order by field2) is unexpect. |
| 120842 | 2026-07-02 16:34 | 2026-07-02 20:22 | MySQL Server: Optimizer | Verified (80 days) | S2 | 9.6.0 | Ubuntu | Any | Wrong result with CTE, DISTINCT, NULL vs empty string, GROUP_CONCAT() and UNION |
| 121272 | 2026-09-12 14:16 | 2026-09-14 11:39 | MySQL Server: Optimizer | Verified (6 days) | S3 | 8.0.45 | MacOS (MacOS 26.5.2, using Homebrew) | ARM | Incorrect ORDER BY when using GROUP BY, GROUP_CONCAT() and COUNT(id) OVER() |
| 117765 | 2025-03-21 3:09 | 2025-03-21 9:01 | MySQL Server: Optimizer | Verified (548 days) | S2 | 9.2.0, 8.0.41, 8.4.4 | Any | Any | Query result may be wrong if using compound order by inside GROUP_CONCAT |
| 120925 | 2026-07-14 14:04 | 2026-07-21 18:19 | MySQL Server: Optimizer | Verified (61 days) | S3 | 8.4.10 | Any | Any | Wrong result with VIEW, GROUP_CONCAT, JSON_QUOTE, UPPER, and UNION |
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