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https://dev.mysql.com/doc/refman/8.0/en/partitioning-selection.html
Explicit selection of partitions and subpartitions for rows matching a given WHERE condition is supported. Partition selection is similar to partition pruning, in that only specific partitions are checked for matches, but differs in two key ...
https://dev.mysql.com/doc/refman/8.0/en/password-management.html
MySQL supports these password-management capabilities: Password expiration, to require passwords to be changed periodically. Password reuse restrictions, to prevent old passwords from being chosen again. Password verification, to require that ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-processlist-table.html
The MySQL process list indicates the operations currently being performed by the set of threads executing within the server. For a comparison of this table with other sources, see Sources of Process Information. If you have the PROCESS privilege, ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-startup-configuration.html
To use the MySQL Performance Schema, it must be enabled at server startup to enable event collection to occur. To enable or disable it explicitly, start the server with the performance_schema variable set to an appropriate value. For example, use ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-statement-digests.html
The MySQL server is capable of maintaining statement digest information. The digesting process converts each SQL statement to normalized form (the statement digest) and computes a SHA-256 hash value (the digest hash value) from the normalized ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-thread-filtering.html
The threads table contains a row for each server thread. Each row contains information about a thread and indicates whether monitoring is enabled for it. For the Performance Schema to monitor a thread, these things must be true: The ...
https://dev.mysql.com/doc/refman/8.0/en/problems-with-null.html
The concept of the NULL value is a common source of confusion for newcomers to SQL, who often think that NULL is the same thing as an empty string ''. For example, the following statements are completely different: mysql> INSERT INTO my_table ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options-binary-log.html
Startup Options Used with Binary Logging System Variables Used with Binary Logging You can use the mysqld options and system variables that are described in this section to affect the operation of the binary log as well as to control which ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options.html
The following sections contain information about mysqld options and server variables that are used in replication and for controlling the binary log. Options and variables for use on sources and replicas are covered separately, as are options and ...
https://dev.mysql.com/doc/refman/8.0/en/replication-sbr-rbr.html
For most users, the mixed replication format should provide the best combination of data integrity and performance. If, however, you want to take advantage of the features specific to the statement-based or row-based replication format when ...