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https://dev.mysql.com/doc/refman/5.7/en/drop-trigger.html
DROP TRIGGER requires the TRIGGER privilege for the table associated with the trigger. Use IF EXISTS to prevent an error from occurring for a trigger that does not exist. A NOTE is generated for a nonexistent trigger when using IF EXISTS. Triggers ... DROP TRIGGER [IF EXISTS] [schema_name.]trigger_name This statement drops a ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-examples-of-use-case-scenarios.html
The following examples are typical use cases for Group Replication. Autonomic Systems - Additionally, you can deploy MySQL Group Replication purely for the automation that is built into the replication protocol (described already in this and ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-buffer-pool-stats-table.html
The INNODB_BUFFER_POOL_STATS table provides much of the same buffer pool information provided in SHOW ENGINE INNODB STATUS output. Much of the same information may also be obtained using InnoDB buffer pool server status variables. For related usage ...The idea of making pages in the buffer pool “young” or “not young” refers to transferring them between the sublists at the head and tail of the buffer pool data ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-configuration.html
For information about optimizing database operations for InnoDB tables, see Section 8.5, “Optimizing for InnoDB Tables”. This section provides configuration information and procedures for InnoDB initialization, startup, and various components ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-backup.html
The next few sections describe how to prepare for and then to create an NDB Cluster backup using the functionality for this purpose found in the ndb_mgm management client. To distinguish this type of backup from a backup made using mysqldump, we ...
https://dev.mysql.com/doc/refman/5.7/en/sys-statements-with-full-table-scans.html
db The default database for the statement, or NULL if there is none. total_latency The total wait time of timed statement events for the statement. rows_examined The total number of rows read from the storage engine for the table. rows_examined_avg ... These views display normalized statements that have done full table ...
https://dev.mysql.com/doc/refman/5.7/en/example-storage-engine.html
When you create an EXAMPLE table, the server creates a table format file in the database directory. mysql> CREATE TABLE test (i INT) ENGINE = EXAMPLE; Query OK, 0 rows affected (0.78 sec) mysql> INSERT INTO test VALUES(1),(2),(3); ERROR 1031 ...To ... The EXAMPLE storage engine is a stub engine that does ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-view-changes.html
Figure 17.10 Stable Group View Change: a Member Joins Whenever a new member joins the group and therefore a view change is performed, every online server queues a view change log event for execution. This is queued because before the view change, ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-deploying-locally.html
For more information on security settings, see Section 17.6, “Group Replication Security”. For example: [mysqld] # server configuration datadir=<full_path_to_data>/data/s1 basedir=<full_path_to_bin>/mysql-8.0/ port=24801 ...It is also possible ... The most common way to deploy Group Replication is using multiple server instances, to provide high ...
https://dev.mysql.com/doc/refman/5.7/en/help.html
Its proper operation requires that the help tables in the mysql database be initialized with help topic information (see Section 5.1.14, “Server-Side Help Support”). The following descriptions indicate the forms that the result set can take. The ...