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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-pre-filtering.html
Modifications to any of these tables affect monitoring immediately, with the exception that modifications to the setup_actors table affect only foreground threads created subsequent to the modification, not existing threads. Pre-filtering can be ...
https://dev.mysql.com/doc/refman/8.0/en/show-replica-status.html
This is similar to the information available from the SHOW REPLICA STATUS statement, but represented in table form. The relay log file name (Relay_Log_File) is set according to the relay_log_recovery setting, either a new file that was created at ...
https://dev.mysql.com/doc/refman/8.0/en/json.html
Along with the JSON data type, a set of SQL functions is available to enable operations on JSON values, such as creation, manipulation, and searching. JSON columns, like columns of other binary types, are not indexed directly; instead, you can ...
https://dev.mysql.com/doc/refman/8.0/en/silent-column-changes.html
In some cases, MySQL silently changes column specifications from those given in a CREATE TABLE or ALTER TABLE statement. Trailing spaces are automatically deleted from ENUM and SET member values when the table is created. See Section 10.4.7, ...
https://dev.mysql.com/doc/refman/8.0/en/fido-pluggable-authentication.html
Table 8.27 Plugin and Library Names for FIDO Authentication Plugin or File Plugin or File Name Server-side plugin authentication_fido Client-side plugin authentication_fido_client Library file authentication_fido.so, authentication_fido_client.so ...
https://dev.mysql.com/doc/refman/8.0/en/alter-tablespace.html
Once a data file has been created, its size cannot be changed; however, you can add more data files to an NDB tablespace using additional ALTER TABLESPACE ... ADD DATAFILE is used with ENGINE = NDB, a data file is created on each Cluster data node, ...It can be used to add a new data file to, or to drop a data file from an NDB ...You may optionally follow size with a ...
https://dev.mysql.com/doc/refman/8.0/en/charset-examples.html
Example 1: Table and Column Definition CREATE TABLE t1 ( c1 CHAR(10) CHARACTER SET latin1 COLLATE latin1_german1_ci ) DEFAULT CHARACTER SET latin2 COLLATE latin2_bin; Here we have a column with a latin1 character set and a latin1_german1_ci ... The ...
https://dev.mysql.com/doc/refman/8.0/en/myisamchk-check-options.html
myisamchk supports the following options for table checking operations: --check, -c Command-Line Format --check Check the table for errors. --check-only-changed, -C Command-Line Format --check-only-changed Check only tables that have changed since ...This is the default operation if you specify no option that selects an operation type ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-status-variables.html
Performance Schema status variables have the following meanings: Performance_schema_accounts_lost The number of times a row could not be added to the accounts table because it was full. Performance_schema_digest_lost The number of digest instances ...This can be nonzero if the value of performance_schema_digests_size is too ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-and-mysql-replication.html
For example, you can replicate modifications to an InnoDB table on the source to a MyISAM table on the replica. Cascading actions for InnoDB tables on the source are executed on the replica only if the tables sharing the foreign key relation use ...