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https://dev.mysql.com/doc/refman/8.0/en/example-maximum-column-group-row.html
Task: For each article, find the dealer or dealers with the most expensive price. Other possibilities for solving the problem are to use an uncorrelated subquery in the FROM clause, a LEFT JOIN, or a common table expression with a window function.
https://dev.mysql.com/doc/refman/8.0/en/fulltext-boolean.html
MySQL can perform boolean full-text searches using the IN BOOLEAN MODE modifier. With this modifier, certain characters have special meaning at the beginning or end of words in the search string. In the following query, the + and - operators ...
https://dev.mysql.com/doc/refman/8.0/en/general-thread-states.html
The following list describes thread State values that are associated with general query processing and not more specialized activities such as replication. Many of these are useful only for finding bugs in the server. After create This occurs when ...
https://dev.mysql.com/doc/refman/8.0/en/identifier-qualifiers.html
An unqualified name is permitted in contexts where interpretation of the name is unambiguous. A qualified name includes at least one qualifier to clarify the interpretive context by overriding a default context or providing missing context. For ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-keywords-table.html
The KEYWORDS table lists the words considered keywords by MySQL and, for each one, indicates whether it is reserved. Reserved keywords may require special treatment in some contexts, such as special quoting when used as identifiers (see Section ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-replication.html
Because the daemon_memcached plugin supports the MySQL binary log, source server through the memcached interface can be replicated for backup, balancing intensive read workloads, and high availability. You do not need to set up the daemon_memcached ...
https://dev.mysql.com/doc/refman/8.0/en/internal-locking.html
This section discusses internal locking; that is, locking performed within the MySQL server itself to manage contention for table contents by multiple sessions. This type of locking is internal because it is performed entirely by the server and ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-key-types.html
MySQL Keyring supports keys of different types (encryption algorithms) and lengths: The available key types depend on which keyring plugin is installed. The permitted key lengths are subject to multiple factors: General keyring loadable-function ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-okv-plugin.html
Note The keyring_okv plugin is an extension included in MySQL Enterprise Edition, a commercial product. The Key Management Interoperability Protocol (KMIP) enables communication of cryptographic keys between a key management server and its clients.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-install-example-data.html
Note The information in this section applies to NDB Cluster running on both Unix and Windows platforms. Working with database tables and data in NDB Cluster is not much different from doing so in standard MySQL. There are two key points to keep in ...