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https://dev.mysql.com/doc/refman/8.0/en/charset-connection.html
For example, the following option file setting changes the three connection-related character set system variables set to koi8r each time you invoke mysql: [mysql] default-character-set=koi8r If you are using the mysql client with auto-reconnect ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-upgrade-downgrade.html
Perform cleanup such as deleting stale logs such as binary logs, or relay logs, and removing any time-dependent state which is no longer valid. Versions Supported for Upgrade to NDB 8.0 Reverting an NDB Cluster 8.0 Upgrade Known Issues When ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlslap.html
Run all the load statements, then run all the queries in the query file with five clients (five times each): mysqlslap --concurrency=5 --iterations=5 --query=query.sql --create=create.sql --delimiter=";" mysqlslap supports the following options, ...
https://dev.mysql.com/doc/refman/8.0/en/flush.html
Reloading the grant tables is necessary to enable updates to MySQL privileges and users only if you make such changes directly to the grant tables; it is not needed for account management statements such as GRANT or REVOKE, which take effect ...Note ...| tables_option } flush_option: { BINARY LOGS | ENGINE LOGS | ERROR LOGS | GENERAL LOGS | HOSTS | LOGS | PRIVILEGES | OPTIMIZER_COSTS | RELAY LOGS [FOR CHANNEL channel] | SLOW LOGS | STATUS | USER_RESOURCES } tables_option: { table_synonym | table_synonym tbl_name [, tbl_name] ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-enterprise-backup.html
Restore backup of s2 onto the host for s3: s3> mysqlbackup --defaults-file=/etc/my.cnf \ --datadir=/var/lib/mysql \ --backup-image=/backups/my.mbi_2206_1429 \ --backup-dir=/tmp/restore_`date +%d%m_%H%M` copy-back-and-apply-log Note The command above ...This section explains how to back up and subsequently restore a Group Replication member using MySQL Enterprise ... MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-foreign-keys.html
Referential Actions When an UPDATE or DELETE operation affects a key value in the parent table that has matching rows in the child table, the result depends on the referential action specified by ON UPDATE and ON DELETE subclauses of the FOREIGN KEY ... MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data ...If ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-installer-catalog-dashboard.html
By default, and when an Internet connection is present, MySQL Installer attempts to update the catalog at startup every seven days. Upgrade: This operation loads the Select Products to Upgrade page and populates it with all the upgrade candidates.
https://dev.mysql.com/doc/refman/8.0/en/create-tablespace.html
The precise syntax and semantics depend on the storage engine used. It can hold multiple tables, and supports all table row formats. One data file is created and added to the tablespace using this statement. This means that each Disk Data object ...
https://dev.mysql.com/doc/refman/8.0/en/information-functions.html
It is advisable to execute BENCHMARK() several times, and to interpret the result with regard to how heavily loaded the server machine is. BENCHMARK() is intended for measuring the runtime performance of scalar expressions, which has some ...It may ...The result value is 0, or NULL for inappropriate arguments such as a NULL or negative repeat ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-replication.html
In other words, it is possible for client A to make an update to co-source 1, and in the meantime, before it propagates to co-source 2, client B could make an update to co-source 2 that makes the update of client A work differently than it did on ...