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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-table-characteristics.html
The name of the performance_schema database is lowercase, as are the names of tables within it. Many tables in the performance_schema database are read only and cannot be modified: mysql> TRUNCATE TABLE performance_schema.setup_instruments; ERROR ...Some of the setup tables have columns that can be modified to affect Performance Schema operation; some also permit rows to be inserted or ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-introduction.html
INFORMATION_SCHEMA provides access to database metadata, information about the MySQL server such as the name of a database or table, the data type of a column, or access privileges. Although you can select INFORMATION_SCHEMA as the default database ...Other terms that are sometimes used for this information are data dictionary and system ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-porting-mysql.html
For example, prepend the table name, or the database name and the table name, before the numeric value. The db_schema column is set to test, which is the name of the database where the multicol table resides. This technique lets you issue simple ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-cjk.html
Does MySQL permit CJK characters to be used in database and table names? A.11.18. Make sure that the database is actually using the desired character set. Does MySQL permit CJK characters to be used in database and table names? Yes. This set of ...
https://dev.mysql.com/doc/refman/8.0/en/known-issues.html
Even if you use lower_case_table_names=2 (which enables MySQL to remember the case used for databases and table names), MySQL does not remember the case used for database names for the function DATABASE() or within the various logs (on ... This ...
https://dev.mysql.com/doc/refman/8.0/en/docker-mysql-more-topics.html
For example: docker run --name mysql1 -d container-registry.oracle.com/mysql/community-server:tag --character-set-server=utf8mb4 --collation-server=utf8mb4_col The command starts the MySQL Server with utf8mb4 as the default character set and ...A ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-tables-table.html
NAME The name of the table, preceded by the schema (database) name where appropriate (for example, test/t1). Names of databases and user tables are in the same case as they were originally defined, possibly influenced by the lower_case_table_names ...For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-benefits.html
InnoDB tables have the following benefits: If the server unexpectedly exits because of a hardware or software issue, regardless of what was happening in the database at the time, you don't need to do anything special after restarting the database.
https://dev.mysql.com/doc/refman/8.0/en/innodb-persistent-stats.html
When an index is added to an existing table, or when a column is added or dropped, index statistics are calculated and added to the innodb_index_stats table regardless of the value of innodb_stats_auto_recalc. 17.8.10.1.5 InnoDB Persistent ... The ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-ndb-sync-excluded-objects-table.html
This table provides information about NDB database objects which cannot be automatically synchronized between NDB Cluster's dictionary and the MySQL data dictionary. Example information about NDB database objects which cannot be synchronized with ...row *************************** SCHEMA_NAME: NULL NAME: lg1 TYPE: LOGFILE GROUP REASON: Injected failure *************************** ...