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https://dev.mysql.com/doc/refman/5.7/en/replication-solutions-unexpected-replica-halt.html
In order for replication to be resilient to unexpected halts of the server (sometimes described as crash-safe) it must be possible for the replica to recover its state before halting. This section describes the impact of an unexpected halt of a ...
https://dev.mysql.com/doc/refman/5.7/en/show-profile.html
Note The SHOW PROFILE and SHOW PROFILES statements are deprecated; expect them to be removed in a future MySQL release. Use the Performance Schema instead; see Section 25.19.1, “Query Profiling Using Performance Schema”. To control profiling, ...
https://dev.mysql.com/doc/refman/5.7/en/signal.html
SIGNAL provides error information to a handler, to an outer portion of the application, or to the client. Also, it provides control over the error's characteristics (error number, SQLSTATE value, message). Without SIGNAL, it is necessary to resort ...
https://dev.mysql.com/doc/refman/5.7/en/storage-engine-setting.html
When you create a new table, you can specify which storage engine to use by adding an ENGINE table option to the CREATE TABLE statement: -- ENGINE=INNODB not needed unless you have set a different -- default storage engine. CREATE TABLE t1 (i INT) ...
https://dev.mysql.com/doc/refman/5.7/en/sys-innodb-lock-waits.html
These views summarize the InnoDB locks that transactions are waiting for. The innodb_lock_waits and x$innodb_lock_waits views have these columns: wait_started The time at which the lock wait started. wait_age How long the lock has been waited for, ...
https://dev.mysql.com/doc/refman/5.7/en/sys-statements-with-sorting.html
The statements_with_sorting and x$statements_with_sorting views have these columns: query The normalized statement string. db The default database for the statement, or NULL if there is none. total_latency The total wait time of timed occurrences of ...
https://dev.mysql.com/doc/refman/5.7/en/table-size-limit.html
The effective maximum table size for MySQL databases is usually determined by operating system constraints on file sizes, not by MySQL internal limits. For up-to-date information operating system file size limits, refer to the documentation ...
https://dev.mysql.com/doc/refman/5.7/en/transport-protocols.html
However, the named_pipe_full_access_group system variable is available to control which MySQL users are permitted to use named-pipe connections. For programs that use the MySQL client library (for example, mysql and mysqldump), MySQL supports ...
https://dev.mysql.com/doc/refman/5.7/en/using-innodb-tables.html
InnoDB tables are created using the CREATE TABLE statement; for example: CREATE TABLE t1 (a INT, b CHAR (20), PRIMARY KEY (a)) ENGINE=InnoDB; The ENGINE=InnoDB clause is not required when InnoDB is defined as the default storage engine, which it is ...
https://dev.mysql.com/doc/refman/5.7/en/validate-password-options-variables.html
This section describes the options, system variables, and status variables that validate_password provides to enable its operation to be configured and monitored. The value should be one of those available for plugin-loading options, as described ...