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https://dev.mysql.com/doc/refman/8.0/en/charset-database.html
For stored routines (procedures and functions), the database character set and collation in effect at routine creation time are used as the character set and collation of character data parameters for which the declaration includes no CHARACTER SET ... Every database has a database character set and a database ...To see the default collation for each character set, use the SHOW CHARACTER ...
https://dev.mysql.com/doc/refman/8.0/en/memory-storage-engine.html
Performance Characteristics MEMORY performance is constrained by contention resulting from single-thread execution and table lock overhead when processing updates. If a MEMORY table hash index has a high degree of key duplication (many index entries ...NDB Cluster offers the same features as the MEMORY engine with higher performance levels, and provides additional features not available with MEMORY: Row-level locking and multiple-thread operation for low contention between ...
https://dev.mysql.com/doc/refman/8.0/en/binary-varbinary.html
The BINARY and VARBINARY types are similar to CHAR and VARCHAR, except that they store binary strings rather than nonbinary strings. This means they have the binary character set and collation, and comparison and sorting are based on the numeric ...
https://dev.mysql.com/doc/refman/8.0/en/replication-semisync-interface.html
rpl_semi_sync_source_timeout or rpl_semi_sync_master_timeout A value in milliseconds that controls how long the source waits on a commit for acknowledgment from a replica before timing out and reverting to asynchronous replication. The replication ... When you install the source and replica plugins for semisynchronous replication (see Section 19.4.10.1, “Installing Semisynchronous Replication”), system variables become available to control plugin ...
https://dev.mysql.com/doc/refman/8.0/en/json-table-functions.html
JSON_TABLE(expr, path COLUMNS (column_list) [AS] alias) Extracts data from a JSON document and returns it as a relational table having the specified columns. The COLUMNS clause evaluates the row source, finds specific JSON values within the row ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-responses-failure-exit.html
However, clients can still read data, and because updates are no longer being made, there is a probability of stale reads which increases over time. This exit action prevents both updates and stale reads (with the exception of reads by client users ... The group_replication_exit_state_action system variable, which is available from MySQL 8.0.12 and MySQL 5.7.24, specifies what Group Replication does when the member leaves the group unintentionally due to an error or problem, and either fails to auto-rejoin or does not ...
https://dev.mysql.com/doc/refman/8.0/en/enterprise-encryption-functions.html
For information on upgrading to the new component functions provided by the MySQL component component_enterprise_encryption, and a list of the behavior differences between the legacy functions and the component functions, see Upgrading MySQL ... In ...
https://dev.mysql.com/doc/refman/8.0/en/general-tablespaces.html
The server keeps tablespace metadata in memory for the lifetime of a tablespace. General tablespace data files can be placed in a directory relative to or independent of the MySQL data directory, which provides you with many of the data file and ...
https://dev.mysql.com/doc/refman/8.0/en/prepare.html
A parameter which is an operand of a temporal operator has type DATETIME if the operator returns a DATETIME, TIME if the operator returns a TIME, and DATE if the operator returns a DATE. Exceptions: The derived type is TIME and the actual type is ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-oci-component.html
The encryption endpoint is vault specific and Oracle Cloud Infrastructure assigns it at vault-creation time. The key management endpoint is vault specific and Oracle Cloud Infrastructure assigns it at vault-creation time. The vaults endpoint is ...