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https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-internals.html
If the number sent by a client is larger, the server considers it to be a real Unix time value rather than an offset from the current time. InnoDB API for the InnoDB memcached Plugin The InnoDB memcached engine accesses InnoDB through InnoDB APIs, ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-monitor-types.html
There are two types of InnoDB monitor: The standard InnoDB Monitor displays the following types of information: Work done by the main background thread Semaphore waits Data about the most recent foreign key and deadlock errors Lock waits for ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-troubleshooting-datadict.html
Information about table definitions is stored in the InnoDB data dictionary. If you move data files around, dictionary data can become inconsistent. If a data dictionary corruption or consistency issue prevents you from starting InnoDB, see Section ...
https://dev.mysql.com/doc/refman/8.0/en/insert-delayed.html
The DELAYED option for the INSERT statement is a MySQL extension to standard SQL. The server recognizes but ignores the DELAYED keyword, handles the insert as a nondelayed insert, and generates an ER_WARN_LEGACY_SYNTAX_CONVERTED warning: INSERT ...
https://dev.mysql.com/doc/refman/8.0/en/install-component.html
INSTALL COMPONENT requires the INSERT privilege for the mysql.component system table because it adds a row to that table to register the component. [SET variable = expr [, variable = expr] ...] variable: { {GLOBAL | @@GLOBAL.} ...
https://dev.mysql.com/doc/refman/8.0/en/install-plugin.html
It requires the INSERT privilege for the mysql.plugin system table because it adds a row to that table to register the plugin. INSTALL PLUGIN plugin_name SONAME 'shared_library_name' This statement installs a server plugin. plugin_name is the name ...
https://dev.mysql.com/doc/refman/8.0/en/is-null-optimization.html
MySQL can perform the same optimization on col_name IS NULL that it can use for col_name = constant_value. For example, MySQL can use indexes and ranges to search for NULL with IS NULL. This optimization does not occur in cases when the column ...
https://dev.mysql.com/doc/refman/8.0/en/loading-tables.html
Suppose that your pet records can be described as shown here. You could create a text file pet.txt containing one record per line, with values separated by tabs, and given in the order in which the columns were listed in the CREATE TABLE statement.
https://dev.mysql.com/doc/refman/8.0/en/merge-storage-engine.html
However, in this case, the table is effectively empty and inserts fail because there is no underlying table to take new rows. The MERGE storage engine, also known as the MRG_MyISAM engine, is a collection of identical MyISAM tables that can be used ...
https://dev.mysql.com/doc/refman/8.0/en/monitor-mysql-memory-use.html
mysql> SELECT * FROM performance_schema.setup_instruments WHERE NAME LIKE '%memory%'; You can narrow results by specifying a code area. The following example demonstrates how to use Performance Schema and sys schema to monitor MySQL memory usage.