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https://dev.mysql.com/doc/refman/8.0/en/keyring.html
Key metadata access: The Performance Schema keyring_keys table exposes metadata for keys in the keyring. The keyring_keys table does not expose any sensitive keyring data such as key contents. The Performance Schema keyring_component_status table ...
https://dev.mysql.com/doc/refman/8.0/en/ldml-rules.html
Orderings are given as a set of rules that begin with a reset rule that establishes an anchor point, followed by shift rules that indicate how characters sort relative to the anchor point. The following table shows the correspondence between ...This ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-limitations-resolved.html
These are described briefly in the following list: Database and table names. In NDB 7.6 and earlier, when using the NDB storage engine, the maximum allowed length both for database names and for table names was 63 bytes, and a statement using a ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-top.html
This user must be able to read tables in the ndbinfo database (ndb_top uses information from ndbinfo.cpustat and related tables). The following table includes all options that are specific to the NDB Cluster program ndb_top. ndb_top displays ...
https://dev.mysql.com/doc/refman/8.0/en/parenthesized-query-expressions.html
| TABLE | VALUES order_by_clause: ORDER BY as for SELECT limit_clause: LIMIT as for SELECT into_clause: INTO as for SELECT set_op: UNION | INTERSECT | EXCEPT MySQL 8.0.22 and higher supports parenthesized query expressions according to the preceding ... parenthesized_query_expression: ( query_expression [order_by_clause] [limit_clause] ) [order_by_clause] [limit_clause] [into_clause] query_expression: query_block [set_op query_block [set_op query_block ...]] [order_by_clause] [limit_clause] [into_clause] query_block: SELECT ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-examples.html
The following example provides one methodology that you can use to analyze a repeatable problem, such as investigating a performance bottleneck. To begin, you should have a repeatable use case where performance is deemed “too slow” and needs ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-instrument-filtering.html
The setup_instruments table lists the available instruments: mysql> SELECT NAME, ENABLED, TIMED FROM performance_schema.setup_instruments; +---------------------------------------------------+---------+-------+ | NAME | ENABLED | TIMED | ...| ...
https://dev.mysql.com/doc/refman/8.0/en/replication-administration-skip.html
Details of the error and the last successfully applied transaction are recorded in the Performance Schema table replication_applier_status_by_worker. This method of skipping transactions is not suitable when you have enabled GTID assignment on a ...
https://dev.mysql.com/doc/refman/8.0/en/replication-delayed.html
The replication_applier_configuration Performance Schema table contains the DESIRED_DELAY column which shows the delay configured using the SOURCE_DELAY | MASTER_DELAY option. The replication_applier_status Performance Schema table contains the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-views.html
Views are filtered by their own name, not by the tables they refer to. This means that a view can be replicated to the replica even if the view contains a table that would normally be filtered out by replication-ignore-table rules. Care should ...