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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-index-stat.html
The following options are used to generate and update the statistics tables in the NDB kernel. ndb_index_stat provides per-fragment statistical information about indexes on NDB tables. This includes cache version and age, number of index entries ...
https://dev.mysql.com/doc/refman/5.7/en/outer-join-optimization.html
If there is a row in A that matches the WHERE clause, but there is no row in B that matches the ON condition, an extra B row is generated with all columns set to NULL. For a LEFT JOIN, if the WHERE condition is always false for the generated NULL ...
https://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
TIMESTAMP and DATETIME columns can be automatically initializated and updated to the current date and time (that is, the current timestamp). For any TIMESTAMP or DATETIME column in a table, you can assign the current timestamp as the default value, ...Any of the synonyms for CURRENT_TIMESTAMP have the same meaning as ...
https://dev.mysql.com/doc/refman/5.7/en/ansi-diff-comments.html
In this case, the generated statement looks like this: UPDATE account SET balance=balance--1 WHERE account_id=5752; balance--1 is valid standard SQL, but -- is interpreted as the start of a comment, and part of the expression is discarded. Standard ...
https://dev.mysql.com/doc/refman/5.7/en/channels-with-prev-replication.html
When a replica has multiple channels and a FOR CHANNEL channel option is not specified, a valid statement generally acts on all available channels, with some specific exceptions. For example, the following statements behave as expected for all ...
https://dev.mysql.com/doc/refman/5.7/en/cursor-restrictions.html
A server-side cursor enables a result set to be generated on the server side, but not transferred to the client except for those rows that the client requests. You cannot use a cursor for a statement that generates a result set if the statement is ... Server-side cursors are implemented in the C API using the mysql_stmt_attr_set() ...
https://dev.mysql.com/doc/refman/5.7/en/error-message-elements.html
Client-side error messages are generated from within the MySQL client library, usually involving problems communicating with the server. Example server-side error messages written to the error log: This message produced during the startup process ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-enabling-monitors.html
InnoDB monitors should only be enabled when you actually want to see monitor information because output generation causes some performance decrement. The --innodb-status-file option is intended for temporary use, as output generation can affect ...
https://dev.mysql.com/doc/refman/5.7/en/keyring-aws-plugin.html
The keyring_aws keyring plugin communicates with the Amazon Web Services Key Management Service (AWS KMS) as a back end for key generation and uses a local file for key storage. All keyring material is generated exclusively by the AWS server, not by ... Note The keyring_aws plugin is an extension included in MySQL Enterprise Edition, a commercial ...
https://dev.mysql.com/doc/refman/5.7/en/keyring-okv-plugin.html
Keyring material is generated exclusively by the back end, not by keyring_okv. Example (using the SQL interface): SELECT keyring_key_generate('MyKey', 'AES', 32); SELECT keyring_key_remove('MyKey'); For information about the characteristics of key ... Note The keyring_okv plugin is an extension included in MySQL Enterprise Edition, a commercial ...