Open donbowman opened 1 year ago
Please answer these questions before submitting your issue. Thanks!
I have a database installed on tidb 5.4.1:
it is working properly. I have backed it up using mysql dump, but cannot import that to same version of tidb. THe issue is a constraint name of ``.
show create table wp_tec_occurrences; wp_tec_occurrences | CREATE TABLE `wp_tec_occurrences` ( `occurrence_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `event_id` bigint(20) unsigned NOT NULL, `post_id` bigint(20) unsigned NOT NULL, `start_date` datetime NOT NULL, `start_date_utc` datetime NOT NULL, `end_date` datetime NOT NULL, `end_date_utc` datetime NOT NULL, `duration` mediumint(30) DEFAULT '7200', `hash` varchar(40) NOT NULL, `updated_at` timestamp DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (`occurrence_id`) /*T![clustered_index] CLUSTERED */, UNIQUE KEY `hash` (`hash`), CONSTRAINT `` FOREIGN KEY (`event_id`) REFERENCES `wp_tec_events` (`event_id`) ON DELETE CASCADE, CONSTRAINT `ref_event_id` FOREIGN KEY (`event_id`) REFERENCES `wp_tec_events` (`event_id`) ON DELETE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin AUTO_INCREMENT=90001
I cannot drop the constraint. I created the new named one (ref_event_id), but cannot get rid of the.
constraint. I created the new named one (ref_event_id), but cannot get rid of the
To be honest I'm not sure how this got created. Its part of wordpress.
I expect that a database i dump can be imported as a means of backup/restore or moving between servers.
The restore does not work unless I edit the dump file to name the empty constraint
*************************** 1. row *************************** tidb_version(): Release Version: v5.4.1 Edition: Community Git Commit Hash: be484475e76b3aaa2cad520111353c3327db35fa Git Branch: heads/refs/tags/v5.4.1 UTC Build Time: 2022-05-07 04:31:32 GoVersion: go1.16.4 Race Enabled: false TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306 Check Table Before Drop: false
So. How can i rename/delete this empty - named constraint?
Maybe you can take a try at dumpling.
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
I have a database installed on tidb 5.4.1:
it is working properly. I have backed it up using mysql dump, but cannot import that to same version of tidb. THe issue is a constraint name of ``.
I cannot drop the
constraint. I created the new named one (ref_event_id), but cannot get rid of the
.To be honest I'm not sure how this got created. Its part of wordpress.
2. What did you expect to see? (Required)
I expect that a database i dump can be imported as a means of backup/restore or moving between servers.
3. What did you see instead (Required)
The restore does not work unless I edit the dump file to name the empty constraint
4. What is your TiDB version? (Required)
So. How can i rename/delete this empty - named constraint?