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https://dev.mysql.com/doc/refman/5.7/en/alter-table-examples.html
For MyISAM tables, you can set the first sequence number by executing SET INSERT_ID=value before ALTER TABLE or by using the AUTO_INCREMENT=value table option. For NDB tables, it is also possible to change the storage type used for a table or column. row *************************** Table: t1 Create Table: CREATE TABLE `t2` ( `c1` int(11) DEFAULT NULL ) /*!50100 TABLESPACE ts_1 STORAGE DISK */ ENGINE=ndbcluster DEFAULT CHARSET=latin1 1 row in set (0.01 sec) To change the storage type of an individual column, you can use ALTER TABLE ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-replication.html
mysql> CHANGE MASTER TO MASTER_HOST='localhost', MASTER_USER='root', MASTER_PASSWORD='', MASTER_PORT = 13000, MASTER_LOG_FILE='0.000001, MASTER_LOG_POS=114; Start the replica. mysql> START SLAVE; If the error log prints output similar to the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-logging.html
The mysql client can do these types of logging for statements executed interactively: On Unix, mysql writes the statements to a history file. How Logging Occurs Controlling the History File syslog Logging Characteristics How Logging Occurs For each ...By default, this file is named .mysql_history in your home ...
https://dev.mysql.com/doc/refman/5.7/en/windows-symbolic-links.html
On Windows, symbolic links can be used for database directories. This enables you to put a database directory at a different location (for example, on a different disk) by setting up a symbolic link to it. Use of database symlinks on Windows is ...
https://dev.mysql.com/doc/refman/5.7/en/audit-log-legacy-filtering.html
Legacy Event Filtering by Account Legacy Event Filtering by Status Legacy Event Filtering by Account To filter audited events based on the originating account, set one (not both) of the following system variables at server startup or runtime. Note ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-disk-io.html
InnoDB uses asynchronous disk I/O where possible, by creating a number of threads to handle I/O operations, while permitting other database operations to proceed while the I/O is still in progress. On Linux and Windows platforms, InnoDB uses the ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-performance-read_ahead.html
A read-ahead request is an I/O request to prefetch multiple pages in the buffer pool asynchronously, in anticipation that these pages are needed soon. InnoDB uses two read-ahead algorithms to improve I/O performance: Linear read-ahead is a ...
https://dev.mysql.com/doc/refman/5.7/en/using-innodb-tables.html
For example, in a table containing information about people, you would not create a primary key on (firstname, lastname) because more than one person can have the same name, a name column may be left blank, and sometimes people change their names.
https://dev.mysql.com/doc/refman/5.7/en/query-cache-operation.html
Prepared statements that are issued using the binary protocol using mysql_stmt_prepare() and mysql_stmt_execute() (see C API Prepared Statement Interface), are subject to limitations on caching. The statement is compared only with other cached ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-events-stages-current-table.html
For discussion of picoseconds as the unit for event times and factors that affect time values, see Section 25.4.1, “Performance Schema Event Timing”. For example, the events_stages_history and events_stages_history_long tables are collections of ...The table stores one row per thread showing the current status of the thread's most recent monitored stage event, so there is no system variable for configuring the table ...