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https://dev.mysql.com/doc/refman/5.7/en/faqs-triggers.html
Can a table have multiple triggers with the same trigger event and action time? A.5.11. Is it possible for a trigger to update tables on a remote server? A.5.12. Information about triggers can be obtained by querying the INFORMATION_SCHEMA.TRIGGERS ...Where can I find the documentation for MySQL 5.7 triggers? ...
https://dev.mysql.com/doc/refman/5.7/en/fulltext-natural-language.html
For each row in the table, MATCH() returns a relevance value; that is, a similarity measure between the search string and the text in that row in the columns named in the MATCH() list. The search must be performed using a full-text index scan rather ... By default or with the IN NATURAL LANGUAGE MODE modifier, the MATCH() function performs a natural language search for a string against a text ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-information-schema-internal-data.html
The data exposed by the transaction and locking tables (INNODB_TRX, INNODB_LOCKS, and INNODB_LOCK_WAITS) represents a glimpse into fast-changing data. This is not like user tables, where the data changes only when application-initiated updates ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-troubleshoot.html
loose-daemon_memcached_option='-c 64' To troubleshoot problems where the memcached daemon is unable to store or retrieve InnoDB table data, encode the -vvv memcached option in the daemon_memcached_option configuration parameter in the MySQL ... This ...
https://dev.mysql.com/doc/refman/5.7/en/insert-on-duplicate.html
In general, you should try to avoid using an ON DUPLICATE KEY UPDATE clause on tables with multiple unique indexes. It is possible to use IGNORE with ON DUPLICATE KEY UPDATE in an INSERT statement, but this may not behave as you expect when ... If ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations-limits.html
Memory consumed when data is inserted into an NDB table is not automatically recovered when deleted, as it is with other storage engines. Instead, the following rules hold true: A DELETE statement on an NDB table makes the memory formerly used by ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-command-options.html
This option is on by default, which enables database, table, and column name completion. The DROP TABLE and CREATE TABLE statements are not executed because the default database is not db1, even though the statements name a table in db1. The INSERT ... mysql supports the following options, which can be specified on the command line or in the [mysql] and [client] groups of an option ...
https://dev.mysql.com/doc/refman/5.7/en/firewall-reference.html
Each mysql system database table is accessible only by accounts that have the SELECT privilege for it. The mysql.firewall_users table lists names and operational modes of registered firewall account profiles. The table has the following columns ...
https://dev.mysql.com/doc/refman/5.7/en/fulltext-stopwords.html
To see the default InnoDB stopword list, query the Information Schema INNODB_FT_DEFAULT_STOPWORD table. The stopword table must have a single VARCHAR column named value. The following example demonstrates creating and configuring a new global ...
https://dev.mysql.com/doc/refman/5.7/en/identifier-mapping.html
There is a correspondence between database and table identifiers and names in the file system. For the basic structure, MySQL represents each database as a directory in the data directory, and each table by one or more files in the appropriate ...