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https://dev.mysql.com/semijoins.html
IN (SELECT ...)) IS NOT TRUE can be transformed into antijoins. In MySQL 8.0.17 and later, the subquery can also be the argument to an expression modified by NOT, IS [NOT] TRUE, or IS [NOT] FALSE. A semijoin is a preparation-time transformation ...
https://dev.mysql.com/server-configuration.html
Its output includes the default option and variable values and looks something like this: abort-slave-event-count 0 allow-suspicious-udfs FALSE archive ON auto-increment-increment 1 auto-increment-offset 1 autocommit TRUE automatic-sp-privileges ...
https://dev.mysql.com/MySQLInstallerConsole.html
C:\> MySQLInstallerConsole install server;5.6.25:*:port=3307;serverid=2:type=user;username=foo;password=bar;role=DBManager C:\> MySQLInstallerConsole install server;5.6.25;x64 -silent An example that passes in additional configuration blocks, ...
https://dev.mysql.com/mysql-cluster-program-options-common.html
--no-defaults Property Value Command-Line Format --no-defaults Type Boolean Default Value TRUE Do not read default options from any option file other than login file. --ndb-optimized-node-selection Property Value Command-Line Format ... All NDB ...
https://dev.mysql.com/any-in-some-subqueries.html
The expression is TRUE if table t2 contains (21,14,7) because there is a value 7 in t2 that is less than 10. The syntax means “there is some b to which a is not equal.” Using <> SOME instead helps ensure that everyone understands the true ...The ...
https://dev.mysql.com/json-attribute-functions.html
The functions in this section return attributes of JSON values. An error occurs if the argument is not a valid JSON document. An empty array, empty object, or scalar value has depth 1. A nonempty array containing only elements of depth 1 or ...
https://dev.mysql.com/json-search-functions.html
Returns true (1) if the two document have any key-value pairs or array elements in common. value MEMBER OF(json_array) Returns true (1) if value is an element of json_array, otherwise returns false (0). The functions in this section perform search ...
https://dev.mysql.com/derived-table-optimization.html
The optimizer propagates an ORDER BY clause in a derived table or view reference to the outer query block if these conditions are all true: The outer query is not grouped or aggregated. What is true for materialization of derived tables is also true ...The optimizer handles derived tables, view references, and common table expressions the same way: It avoids unnecessary materialization whenever possible, which enables pushing down conditions from the outer query to derived tables and produces more efficient execution ...
https://dev.mysql.com/mysql-cluster-security-mysql-privileges.html
The same thing is true with respect to the CREATE USER and DROP USER statements. If these conditions are true, then anyone, anywhere can start a MySQL Server with --ndbcluster --ndb-connectstring=management_host and access this NDB Cluster. This is ... In this section, we discuss how the MySQL privilege system works in relation to NDB Cluster and the implications of this for keeping an NDB Cluster ...
https://dev.mysql.com/mysql-cluster-shm-definition.html
Communications between NDB cluster nodes are normally handled using TCP/IP. The shared memory (SHM) transporter is distinguished by the fact that signals are transmitted by writing in memory rather than on a socket. The shared-memory transporter ...
Document created the 26/06/2006, last modified the 26/10/2018
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