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https://dev.mysql.com/doc/refman/8.0/en/known-issues.html
An UPDATE statement involving a temporary table with a join on a non-temporary table having a trigger defined on it can result in an error, even though the update statement reads only the non-temporary table, in the following cases: With read-only ...In an UPDATE statement, columns are updated from left to ...
https://dev.mysql.com/doc/refman/8.0/en/change-master-to.html
Using ON safeguards against the accidental loss of primary keys when multiple sources update the same set of tables. It also updates the contents of the replication metadata repositories (see Section 19.2.4, “Relay Log and Replication Metadata ...
https://dev.mysql.com/doc/refman/8.0/en/change-replication-source-to.html
Using ON safeguards against the accidental loss of primary keys when multiple sources update the same set of tables. It also updates the contents of the replication metadata repositories (see Section 19.2.4, “Relay Log and Replication Metadata ...
https://dev.mysql.com/doc/refman/8.0/en/account-categories.html
For example, if a user can grant the SELECT and UPDATE privileges to regular accounts, then with SYSTEM_USER the user can also grant SELECT and UPDATE to system accounts. From MySQL 8.0.30, if the user that puts a server in offline mode does not ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-table-import.html
To do so, stop updating the related tables, commit all transactions, acquire shared locks on the tables, and perform the export operations. The .cfg file format was updated in MySQL 8.0.19 to include index key part sort order information. DISCARD ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-mta.html
Where the current binary logging mode does not include all columns, but only changed columns (--ndb-log-updated-only=OFF, --ndb-log-update-minimal=ON, --ndb-log-update-as-write=OFF), this can increase the volume of data sent from data nodes to SQL ...Where dependencies cannot be efficiently determined, mysqld falls back to considering transactions dependent for reasons of ...To use this functionality with NDB ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-init-startup-configuration.html
InnoDB is a transaction-safe (ACID compliant) storage engine with commit, rollback, and crash-recovery capabilities to protect user data. The doublewrite buffer adds safety to recovery following an unexpected exit or power outage, and improves ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-crash-recovery.html
If you run myisamchk to check tables that mysqld is updating at the same time, you may get a warning that a table is corrupt even when it is not. In this case, if the server tries to update a table that myisamchk is using, the server waits for ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-data-node-memory-management.html
It also holds table rows as they are updated, before the next commit writes them to data memory. MaxNoOfConcurrentOperations limits the number of operations that can be active at any one time in updating transactions. While its value can be ... All ...
https://dev.mysql.com/doc/refman/8.0/en/replication-problems.html
If the preceding step does not work or does not apply, try to understand whether it would be safe to make the update manually (if needed) and then ignore the next statement from the source. If you are sure that the replica started out perfectly ...