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https://dev.mysql.com/doc/refman/8.0/en/partitioning-limitations-partitioning-keys-unique-keys.html
This section discusses the relationship of partitioning keys with primary keys and unique keys. The rule governing this relationship can be expressed as follows: All columns used in the partitioning expression for a partitioned table must be part ...
https://dev.mysql.com/doc/refman/8.0/en/glossary.html
These terms are commonly used in information about the MySQL database server. Files with this extension are always included in backups produced by the mysqlbackup command of the MySQL Enterprise Backup product. Files with this extension are always ...
https://dev.mysql.com/doc/refman/8.0/en/create-index.html
CREATE [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name [index_type] ON tbl_name (key_part,...) [index_option] [algorithm_option | lock_option] ... This guideline is especially important for InnoDB tables, where the primary key determines the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbd-definition.html
The [ndbd] and [ndbd default] sections are used to configure the behavior of the cluster's data nodes. [ndbd] and [ndbd default] are always used as the section names whether you are using ndbd or ndbmtd binaries for the data node processes. There ...
https://dev.mysql.com/doc/refman/8.0/en/create-table.html
| {FULLTEXT | SPATIAL} [INDEX | KEY] [index_name] (key_part,...) [index_option] ... | [CONSTRAINT [symbol]] UNIQUE [INDEX | KEY] [index_name] [index_type] (key_part,...) [index_option] ... (Some valid select or union statement) CREATE TABLE creates ...
https://dev.mysql.com/doc/refman/8.0/en/constraint-primary-key.html
Normally, errors occur for data-change statements (such as INSERT or UPDATE) that would violate primary-key, unique-key, or foreign-key constraints. If you are using a transactional storage engine such as InnoDB, MySQL automatically rolls back the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-locks-set.html
A locking read, an UPDATE, or a DELETE generally set record locks on every index record that is scanned in the processing of an SQL statement. It does not matter whether there are WHERE conditions in the statement that would exclude the row. InnoDB ...
https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-functions.html
The function return value and type are the same as the return value and type of its argument, but the function result is not checked for the ONLY_FULL_GROUP_BY SQL mode. As a result, the address value for rows within each name group is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-limitations-transactions.html
A number of limitations exist in NDB Cluster with regard to the handling of transactions. The NDBCLUSTER storage engine supports only the READ COMMITTED transaction isolation level. To ensure that a given transaction reads only before or after ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-options-variables.html
This section provides information about MySQL server options, server and status variables that are specific to NDB Cluster. For general information on using these, and for other options and variables not specific to NDB Cluster, see Section 7.1, ...