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https://dev.mysql.com/doc/refman/8.4/en/replication-encrypted-connections.html
If this option is set to NULL when TLSv1.3 is used (which is the default if you do not set the option), the ciphersuites that are enabled by default are allowed. To use an encrypted connection for the transfer of the binary log required during ...
https://dev.mysql.com/doc/refman/8.4/en/start-group-replication.html
You cannot specify an empty or null string, or omit the USER option if PASSWORD is specified. START GROUP_REPLICATION [USER='user_name'] [, PASSWORD='user_pass'] [, DEFAULT_AUTH='plugin_name'] Starts group replication. This statement requires the ...
https://dev.mysql.com/doc/refman/8.4/en/start-replica.html
The option cannot be set to an empty or null string. START REPLICA [thread_types] [until_option] [connection_options] [channel_option] thread_types: [thread_type [, thread_type] ... ] thread_type: IO_THREAD | SQL_THREAD until_option: UNTIL { ...
https://dev.mysql.com/doc/mysql-enterprise-backup/8.4/en/mysqlbackup.restore.html
To restore a MySQL instance from a backup to a database server: Shut down the database server. Also delete all files inside the directories specified by the --innodb_data_home_dir, --innodb_log_group_home_dir, and --innodb_undo_directory options ...
https://dev.mysql.com/doc/relnotes/connector-j/en/news-8-0-30.html
Version 8.0.30 is the latest General Availability release of the 8.0 series of MySQL Connector/J. It is suitable for use with MySQL Server versions 8.0 and 5.7. It supports the Java Database Connectivity (JDBC) 4.2 API, and implements the X DevAPI.
https://dev.mysql.com/doc/connectors/en/connector-j-query-attributes.html
Connector/J supports Query Attributes when it has been enabled on the server by installing the query_attributes component (see Prerequisites for Using Query Attributes for details). Attributes are set for a query by using the setAttribute() method ...
https://dev.mysql.com/doc/connector-j/en/connector-j-query-attributes.html
Connector/J supports Query Attributes when it has been enabled on the server by installing the query_attributes component (see Prerequisites for Using Query Attributes for details). Attributes are set for a query by using the setAttribute() method ...
https://dev.mysql.com/doc/refman/8.4/en/federated-create-connection.html
For example: CREATE TABLE federated_table ( id INT(20) NOT NULL AUTO_INCREMENT, name VARCHAR(32) NOT NULL DEFAULT '', other INT(20) NOT NULL DEFAULT '0', PRIMARY KEY (id), INDEX name (name), INDEX other_key (other) ) ENGINE=FEDERATED DEFAULT ... To ...
https://dev.mysql.com/doc/refman/8.4/en/json-validation-functions.html
Both functions handle null or invalid input as follows: If at least one of the arguments is NULL, the function returns NULL. As before, you can see this by attempting to insert the value into the geo table, then issuing SHOW WARNINGS afterwards: ...
https://dev.mysql.com/doc/internals/en/packed-record-layout.html
pack bits (!= NULL bits!): One bit per packable column: FIELD_BLOB: Set if blob is empty. => The "pack bits" are rounded up to the next byte boundary. Each field is copied verbatim unless packed according to the "pack bits" paragraph.