https://dev.mysql.com/data-type-defaults.html
In the definition of an integer column, it is an alias for NOT NULL AUTO_INCREMENT UNIQUE. An expression default value cannot depend on a column that has the AUTO_INCREMENT attribute. Implicit defaults are defined as follows: For numeric types, the ... Data type specifications can have explicit or implicit default ...
https://dev.mysql.com/example-foreign-keys.html
In MySQL, InnoDB tables support checking of foreign key constraints. See Chapter 15, The InnoDB Storage Engine, and Section 1.8.2.3, “Foreign Key Differences”. A foreign key constraint is not required merely to join two tables. It is extremely ...
https://dev.mysql.com/innodb-locks-set.html
While initializing a previously specified AUTO_INCREMENT column on a table, InnoDB sets an exclusive lock on the end of the index associated with the AUTO_INCREMENT column. InnoDB fetches the value of a previously initialized AUTO_INCREMENT column ... A locking read, an UPDATE, or a DELETE generally set record locks on every index record that is scanned in the processing of the SQL ...
https://dev.mysql.com/merge-storage-engine.html
The MERGE storage engine, also known as the MRG_MyISAM engine, is a collection of identical MyISAM tables that can be used as one. “Identical” means that all tables have identical column data types and index information. You cannot merge MyISAM ...
https://dev.mysql.com/myisamchk-other-options.html
--set-auto-increment[=value], -A[value] Force AUTO_INCREMENT numbering for new records to start at the given value (or higher, if there are existing records with AUTO_INCREMENT values this large). If value is not specified, AUTO_INCREMENT numbers ...
https://dev.mysql.com/mysql-cluster-online-add-node-example.html
In this section we provide a detailed example illustrating how to add new NDB Cluster data nodes online, starting with an NDB Cluster having 2 data nodes in a single node group and concluding with a cluster having 4 data nodes in 2 node groups.
https://dev.mysql.com/numeric-type-overview.html
SERIAL is an alias for BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE. SERIAL DEFAULT VALUE in the definition of an integer column is an alias for NOT NULL AUTO_INCREMENT UNIQUE. SERIAL is an alias for BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE.
https://dev.mysql.com/replication-rbr-safe-unsafe.html
Trigger or stored program updates a table having an AUTO_INCREMENT column. In addition, an INSERT into a table that has a composite primary key containing an AUTO_INCREMENT column that is not the first column of this composite key is unsafe. The ...
https://dev.mysql.com/show-columns.html
The value is nonempty in these cases: auto_increment for columns that have the AUTO_INCREMENT attribute. SHOW [EXTENDED] [FULL] {COLUMNS | FIELDS} {FROM | IN} tbl_name [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW COLUMNS displays ...
https://dev.mysql.com/tables-table.html
The information_schema_stats_expiry system variable defines the period of time before cached table statistics expire. If there are no cached statistics or statistics have expired, statistics are retrieved from storage engines when querying table ...
