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https://dev.mysql.com/doc/refman/8.0/en/change-replication-source-to.html
The system variable replica_net_timeout (from MySQL 8.0.26) or slave_net_timeout (before MySQL 8.0.26) specifies the number of seconds that the replica waits for either more data or a heartbeat signal from the source, before the replica considers ...
https://dev.mysql.com/doc/refman/8.0/en/json-utility-functions.html
This section documents utility functions that act on JSON values, or strings that can be parsed as JSON values. JSON_PRETTY() prints out a JSON value in a format that is easy to read. JSON_STORAGE_SIZE() and JSON_STORAGE_FREE() show, respectively, ...
https://dev.mysql.com/doc/refman/8.0/en/logical-operators.html
In MySQL, these are implemented as 1 (TRUE), 0 (FALSE), and NULL. For example, the following statements all assess to TRUE: mysql> SELECT 10 IS TRUE; -> 1 mysql> SELECT -10 IS TRUE; -> 1 mysql> SELECT 'string' IS NOT NULL; -> 1 NOT, ! Logical NOT.
https://dev.mysql.com/doc/refman/8.0/en/mysqlimport.html
The mysqlimport client provides a command-line interface to the LOAD DATA SQL statement. Most options to mysqlimport correspond directly to clauses of LOAD DATA syntax. Invoke mysqlimport like this: mysqlimport [options] db_name textfile1 ...For ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlcheck.html
If you use the --databases or --all-databases option to process all tables in one or more databases, an invocation of mysqlcheck might take a long time. The mysqlcheck client performs table maintenance: It checks, repairs, optimizes, or analyzes ...
https://dev.mysql.com/doc/refman/8.0/en/pluggable-authentication-system-variables.html
Note As of MySQL 8.0.35, this plugin variable is deprecated and subject to removal in a future MySQL release. authentication_kerberos_service_key_tab Command-Line Format --authentication-kerberos-service-key-tab=file_name Introduced 8.0.26 System ...
https://dev.mysql.com/doc/refman/8.0/en/create-index.html
For more information about indexes, see Section 10.3.1, “How MySQL Uses Indexes”. Beginning with MySQL 8.0.17, the expr for a key_part specification can take the form (CAST json_expression AS type ARRAY) to create a multi-valued index on a JSON ... CREATE [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name [index_type] ON tbl_name (key_part,...) [index_option] [algorithm_option | lock_option] ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-online-upgrade-combining-versions.html
However, while you are in the process of upgrading an online group, in order to maximize availability, you might need to have members with different MySQL Server versions running at the same time. Group Replication is versioned according to the ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlshow.html
The mysqlshow client can be used to quickly see which databases exist, their tables, or a table's columns or indexes. For example, you can issue them from the mysql client program. Invoke mysqlshow like this: mysqlshow [options] [db_name [tbl_name ...The same information can be obtained by using those statements ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-sets.html
MySQL supports multiple Unicode character sets: utf8mb4: A UTF-8 encoding of the Unicode character set using one to four bytes per character. This character set is deprecated in MySQL 8.0, and you should use utf8mb4 instead. Deprecated in MySQL ...