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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-mgm-client-commands.html
Since there is currently no way using ndb_mgm or the mysql client to remove all data from a specific data node or node group, this means that the command succeeds only in the two following cases: After issuing CREATE NODEGROUP in the ndb_mgm client, ...Commands for the event logs are given in Section 25.6.3, “Event Reports Generated in NDB Cluster”; commands for creating backups and restoring from them are provided in Section 25.6.8, “Online Backup of NDB ...
https://dev.mysql.com/doc/refman/8.0/en/ibd2sdi.html
ibd2sdi is a utility for extracting serialized dictionary information (SDI) from InnoDB tablespace files. ibd2sdi can be run on file-per-table tablespace files (*.ibd files), general tablespace files (*.ibd files), system tablespace files (ibdata* ...ibd2sdi can be used at runtime or while the server is ...
https://dev.mysql.com/doc/refman/8.0/en/statement-caching.html
Metadata changes occur for DDL statements such as those that create, drop, alter, rename, or truncate tables, or that analyze, optimize, or repair tables. Table content changes (for example, with INSERT or UPDATE) do not change metadata, nor do ...
https://dev.mysql.com/doc/refman/8.0/en/server-shutdown.html
Depending on how shutdown was initiated, the server might create a thread to handle the shutdown process. If shutdown was requested by a client, a shutdown thread is created. If shutdown is the result of receiving a SIGTERM signal, the signal thread ... The server shutdown process takes place as follows: The shutdown process is ...
https://dev.mysql.com/doc/refman/8.0/en/example-auto-increment.html
To start with an AUTO_INCREMENT value other than 1, set that value with CREATE TABLE or ALTER TABLE, like this: mysql> ALTER TABLE tbl AUTO_INCREMENT = 100; InnoDB Notes For information about AUTO_INCREMENT usage specific to InnoDB, see Section ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-log-events.html
Table 25.61 Events relating to NDB Cluster schema operations Event Priority Severity Level Description CreateSchemaObject 8 INFO Schema objected created AlterSchemaObject 8 INFO Schema object updated DropSchemaObject 8 INFO Schema object dropped ...
https://dev.mysql.com/doc/refman/8.0/en/any-in-some-subqueries.html
The expression is TRUE if table t2 contains (21,14,7) because there is a value 7 in t2 that is less than 10. The expression is FALSE if table t2 contains (20,10), or if table t2 is empty. The expression is unknown (that is, NULL) if table t2 ...When ...
https://dev.mysql.com/doc/refman/8.0/en/correlated-subqueries.html
A correlated subquery is a subquery that contains a reference to a table that also appears in the outer query. For example: SELECT * FROM t1 WHERE column1 = ANY (SELECT column1 FROM t2 WHERE t2.column2 = t1.column2); Notice that the subquery ...So, ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl.html
The online DDL feature provides support for instant and in-place table alterations and concurrent DML. Benefits of this feature include: Improved responsiveness and availability in busy production environments, where making a table unavailable for ...For in-place operations, the ability to adjust the balance between performance and concurrency during DDL operations using the LOCK ...
https://dev.mysql.com/doc/refman/8.0/en/kill.html
Thread processlist identifiers can be determined from the ID column of the INFORMATION_SCHEMA PROCESSLIST table, the Id column of SHOW PROCESSLIST output, and the PROCESSLIST_ID column of the Performance Schema threads table. ALTER TABLE operations ... KILL [CONNECTION | QUERY] processlist_id Each connection to mysqld runs in a separate ...