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https://dev.mysql.com/doc/refman/8.0/en/get-diagnostics.html
It is a MySQL extension that GET [CURRENT] DIAGNOSTICS is permitted outside handler context to check the execution of any SQL statement. For a description of the diagnostics area, see Section 15.6.7.7, “The MySQL Diagnostics Area”. When a ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-index-table-table.html
The same word can occur several times within the cache table, once for each combination of DOC_ID and POSITION values. The INNODB_FT_INDEX_TABLE table provides information about the inverted index used to process text searches against the FULLTEXT ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-plugin-installation.html
Note Only one keyring component or plugin should be enabled at a time. A keyring component must be enabled on the MySQL Server instance if you need to support secure storage for persisted system variable values, rather than a keyring plugin, which ... Keyring service consumers require that a keyring component or plugin be installed: To use a keyring plugin, begin with the instructions ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-diskio.html
Specifying a threshold to force smaller, periodic flushes may be beneficial in cases where multiple MySQL instances use the same storage devices. For example, creating a new MySQL instance and its associated data files could cause large surges of ...
https://dev.mysql.com/doc/refman/8.0/en/rewriter-query-rewrite-plugin-usage.html
These statements are subject to rewriting: As of MySQL 8.0.12: SELECT, INSERT, REPLACE, UPDATE, and DELETE. Beginning with MySQL 8.0.31, statements run by users with the SKIP_QUERY_REWRITE privilege are not subject to rewriting, provided that the ...
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. The processlist table contains a row for each server process: mysql> SELECT * FROM performance_schema.processlist\G ...For ...
https://dev.mysql.com/doc/refman/8.0/en/create-event.html
The DEFINER clause specifies the MySQL account to be used when checking access privileges at event execution time. The ENDS keyword is followed by a timestamp value that tells MySQL when the event should stop repeating. The ON SCHEDULE clause may ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-filtering.html
Legacy mode (deprecated in MySQL 8.0.34) is filtering behavior as it was prior to MySQL 5.7.13; that is, before the introduction of rule-based filtering. Audit log filtering is used to implement component services from MySQL 8.0.30. By default, ...
https://dev.mysql.com/doc/refman/8.0/en/connecting-using-dns-srv.html
MySQL supports the use of DNS SRV records for connecting to servers. A client that receives a DNS SRV lookup result attempts to connect to the MySQL server on each of the listed hosts in order of preference, based on the priority and weighting ...
https://dev.mysql.com/doc/refman/8.0/en/derived-tables.html
Prior to MySQL 8.0.14, a derived table cannot contain outer references. This is a MySQL restriction that is lifted in MySQL 8.0.14, not a restriction of the SQL standard. This is also true of the following nested SELECT: mysql> EXPLAIN SELECT NOW() ...For information about lateral derived tables preceded by the LATERAL keyword, see Section 15.2.15.9, “Lateral Derived ...