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https://dev.mysql.com/doc/refman/8.0/en/diagnostics-area.html
Standard SQL has a diagnostics area stack, containing a diagnostics area for each nested execution context. Standard SQL also supports GET STACKED DIAGNOSTICS syntax for referring to the second diagnostics area during condition handler execution.
https://dev.mysql.com/doc/refman/8.0/en/extensions-to-ansi.html
The ORDER BY and LIMIT clauses of the UPDATE and DELETE statements. The LOW_PRIORITY clause of the INSERT, REPLACE, DELETE, and UPDATE statements. Organization of data on disk MySQL Server maps each database to a directory under the MySQL data ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-installation.html
This section describes the basics for planning, installing, configuring, and running an NDB Cluster. Whereas the examples in Section 25.4, “Configuration of NDB Cluster” provide more in-depth information on a variety of clustering options and ...However, if DNS resolution is available on your network, it is possible to use host names in lieu of IP addresses in configuring ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-mgm-client-commands.html
In addition to the central configuration file, a cluster may also be controlled through a command-line interface available through the management client ndb_mgm. Commands for the event logs are given in Section 25.6.3, “Event Reports Generated in ...CONNECT connection-string Connects to the management server indicated by the connection ...
https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html
type is one of the following data types: FLOAT DOUBLE DECIMAL SIGNED UNSIGNED DATE TIME DATETIME YEAR (MySQL 8.0.22 and later) YEAR values of one or two digits are not supported. JSON_CONTAINS(target, candidate[, path]) Indicates by returning 1 or 0 ...Two scalar values are comparable if they have the same JSON_TYPE() types, with the exception that values of types INTEGER and DECIMAL are also comparable to each ... The functions in this section ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-installer-setup.html
Choosing one of the following setup types determines the initial installation only and does not limit your ability to install or update MySQL products for Windows later: Server only: Only install the MySQL server. Two or more MySQL server versions ... Choosing a Setup Type Path Conflicts Check Requirements MySQL Installer Configuration Files When you download MySQL Installer for the first time, a setup wizard guides you through the initial installation of MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-management-range-list.html
SELECT ..., then drop the old table and rename the new one, but this could be very time-consuming when dealing with a large amounts of data. Adding and dropping of range and list partitions are handled in a similar fashion, so we discuss the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-transaction-isolation-levels.html
If the row matches (must be updated), MySQL reads the row again and this time InnoDB either locks it or waits for a lock on it. Isolation is the I in the acronym ACID; the isolation level is the setting that fine-tunes the balance between ...InnoDB ... Transaction isolation is one of the foundations of database ...
https://dev.mysql.com/doc/refman/8.0/en/locking-service.html
If the timeout is 0, there is no waiting and the call produces an error if locks cannot be acquired immediately. If acquisition of any lock fails, the call acquires no locks and fails, typically with an ER_LOCKING_SERVICE_TIMEOUT or ...The locking ... MySQL distributions provide a locking interface that is accessible at two levels: At the SQL level, as a set of loadable functions that each map onto calls to the service ...
https://dev.mysql.com/doc/refman/8.0/en/blob.html
These correspond to the four BLOB types and have the same maximum lengths and storage requirements. They have the binary character set and collation, and comparison and sorting are based on the numeric values of the bytes in column values. They have ... A BLOB is a binary large object that can hold a variable amount of ...