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https://dev.mysql.com/doc/refman/8.0/en/mysql-ssl-rsa-setup.html
This program creates the SSL certificate and key files and RSA key-pair files required to support secure connections using SSL and secure password exchange using RSA over unencrypted connections, if those files are missing. See Section 8.3.3.1, ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-select.html
For example: mysql> CREATE TABLE test (a INT NOT NULL AUTO_INCREMENT, -> PRIMARY KEY (a), KEY(b)) -> ENGINE=InnoDB SELECT b,c FROM test2; This creates an InnoDB table with three columns, a, b, and c. As of MySQL 8.0.21, on storage engines that ...
https://dev.mysql.com/doc/refman/8.0/en/index-page-merge-threshold.html
row *************************** Table: t2 Create Table: CREATE TABLE `t2` ( `id` int(11) DEFAULT NULL, KEY `id_index` (`id`) COMMENT 'MERGE_THRESHOLD=40' ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci Note A MERGE_THRESHOLD value ...If the “page-full” percentage for an index page falls below the MERGE_THRESHOLD value when a row is deleted or when a row is shortened by an UPDATE operation, InnoDB attempts to merge the index page with a neighboring index ...
https://dev.mysql.com/doc/refman/8.0/en/enterprise-encryption-installation.html
Also, if you want to change the maximum length allowed for the RSA keys generated by the component functions, use the component’s system variable enterprise_encryption.maximum_rsa_key_size to set an appropriate maximum. The functions provided by ... In releases before MySQL 8.0.30, the functions provided by MySQL Enterprise Encryption are installed by creating them individually, based on the openssl_udf shared ...
https://dev.mysql.com/doc/refman/8.0/en/group-by-optimization.html
The most important preconditions for using indexes for GROUP BY are that all GROUP BY columns reference attributes from the same index, and that the index stores its keys in order (as is true, for example, for a BTREE index, but not for a HASH ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-options.html
MySQL supports the following keyring-related command-line options: --keyring-migration-destination=plugin Command-Line Format --keyring-migration-destination=plugin_name Type String The destination keyring plugin for key migration. The option value ...The source and destination plugins must differ, and the migration server must support both ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-connection-configuration-table.html
(CHANGE REPLICATION SOURCE TO option: SOURCE_AUTO_POSITION, CHANGE MASTER TO option: MASTER_AUTO_POSITION) SSL_ALLOWED, SSL_CA_FILE, SSL_CA_PATH, SSL_CERTIFICATE, SSL_CIPHER, SSL_KEY, SSL_VERIFY_SERVER_CERTIFICATE, SSL_CRL_FILE, SSL_CRL_PATH These ... This table shows the configuration parameters used by the replica for connecting to the ...
https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-functions.html
There are multiple ways to cause MySQL to accept the query: Alter the table to make name a primary key or a unique NOT NULL column. ON DUPLICATE KEY UPDATE statement, you can use the VALUES(col_name) function in the UPDATE clause to refer to column ...The function return value and type are the same as the return value and type of its argument, but the function result is not checked for the ONLY_FULL_GROUP_BY SQL ...
https://dev.mysql.com/doc/refman/8.0/en/order-by-optimization.html
Assuming that there is an index on (key_part1, key_part2), the following queries may use the index to resolve the ORDER BY part. In this query, the index on (key_part1, key_part2) enables the optimizer to avoid sorting: SELECT * FROM t1 ORDER BY ...
https://dev.mysql.com/doc/refman/8.0/en/descending-indexes.html
MySQL supports descending indexes: DESC in an index definition is no longer ignored but causes storage of key values in descending order. DISTINCT can use any index containing matching columns, including descending key parts. Indexes that have ...