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https://dev.mysql.com/doc/refman/8.0/en/index-btree-hash.html
Understanding the B-tree and hash data structures can help predict how different queries perform on different storage engines that use these data structures in their indexes, particularly for the MEMORY storage engine that lets you choose B-tree or ...B-Tree Index Characteristics Hash Index Characteristics B-Tree Index Characteristics A B-tree index can be used for column comparisons in expressions that use the =, >, >=, <, <=, or BETWEEN ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-transactions.html
Note This section describes locking information as exposed by the Performance Schema data_locks and data_lock_waits tables, which supersede the INFORMATION_SCHEMA INNODB_LOCKS and INNODB_LOCK_WAITS tables in MySQL 8.0. For similar discussion ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl.html
The online DDL feature provides support for instant and in-place table alterations and concurrent DML. Benefits of this feature include: Improved responsiveness and availability in busy production environments, where making a table unavailable for ...Typically, you do not need to do anything special to enable online ...
https://dev.mysql.com/doc/refman/8.0/en/macos-installation-launchd.html
macOS uses launch daemons to automatically start, stop, and manage processes and applications such as MySQL. To enable the launchd service, you can either: Open macOS system preferences and select the MySQL preference panel, and then execute Start ...The md5 checksum of a file containing the above snippet is ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-documents-collections.html
Collections contain JSON documents that you can add, find, update, and remove. Internally, they are stored in an efficient binary format that enables fast lookups and updates. When you are using MySQL as a Document Store, collections are containers ...The examples in this section use the countryinfo collection in the world_x ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-documents-collections.html
Collections contain JSON documents that you can add, find, update, and remove. Internally, they are stored in an efficient binary format that enables fast lookups and updates. When you are using MySQL as a Document Store, collections are containers ...The examples in this section use the countryinfo collection in the world_x ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-temptables.html
Because of the differences in behavior between row-based or mixed replication mode and statement-based replication mode regarding temporary tables, you cannot switch the replication format at runtime, if the change applies to a context (global or ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-failure-handling.html
If the operation does not resume within the allotted time, it aborts and returns an error, and the donor drops the snapshot. Prior to MySQL 8.0.24, donor threads use the MySQL Server wait_timeout setting when listening for Clone protocol commands.
https://dev.mysql.com/doc/refman/8.0/en/innodb-and-mysql-replication.html
For more information see, Section 19.4.4, “Using Replication with Different Source and Replica Storage Engines”. For information about setting up a replica, see Section 19.1.2.6, “Setting Up Replicas”, and Section 19.1.2.5, “Choosing a ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-connection-attribute-tables.html
Connection attributes are key-value pairs that application programs can pass to the server at connect time. For applications based on the C API implemented by the libmysqlclient client library, the mysql_options() and mysql_options4() functions ...