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https://dev.mysql.com/doc/refman/8.0/en/mysql-commands.html
If multiple attributes are defined with the same name, attempts to retrieve the attribute value have an undefined result. Have a tee file enabled and pager set to less, and you are able to browse the results using the less program and still have ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-installer-catalog-dashboard.html
An installed product can have more than one upgrade version and the operation requires a current product catalog. Automatic Select this mode to have MySQL Installer look for system settings and to use those settings if found, or to use no proxy if ... This section describes the MySQL Installer product catalog, the dashboard, and other actions related to product selection and ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-ssl-rsa-setup.html
mysql_ssl_rsa_setup can also be used to create new SSL files if the existing ones have expired. Another way to generate SSL and RSA files, for MySQL distributions compiled using OpenSSL, is to have the server generate them automatically. If the SSL ...Instead, consider using MySQL server to generate missing SSL and RSA files automatically at startup (see Automatic SSL and RSA File ...
https://dev.mysql.com/doc/refman/8.0/en/mysqladmin.html
To kill threads belonging to other users, the connected user must have the CONNECTION_ADMIN privilege (or the deprecated SUPER privilege). Slow queries The number of queries that have taken more than long_query_time seconds. You can use it to check ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlpump.html
To reload a dump file, you must have the privileges required to execute the statements that it contains, such as the appropriate CREATE privileges for objects created by those statements. --defer-table-indexes Command-Line Format ... mysqlpump ...
https://dev.mysql.com/doc/refman/8.0/en/numeric-type-attributes.html
CHECK constraints cannot refer to columns that have the AUTO_INCREMENT attribute, nor can the AUTO_INCREMENT attribute be added to existing columns that are used in CHECK constraints. MySQL supports an extension for optionally specifying the ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-queries-myisam.html
This updates a value for each index part that indicates the average number of rows that have the same value. This is a good way to make queries faster if you have a unique index from which you want to read all rows in order according to the index.
https://dev.mysql.com/doc/refman/8.0/en/order-by-optimization.html
A condition for index use is that the index must have the same homogeneity, but need not have the same actual direction. (This is the first table in the EXPLAIN output that does not have a const join type.) The query has different ORDER BY and GROUP ... This section describes when MySQL can use an index to satisfy an ORDER BY clause, the filesort operation used when an index cannot be used, and execution plan information available from the optimizer about ORDER ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-columns-range.html
A value_list must be supplied for each partition definition, and each value_list must have the same number of values as the column_list has columns. However, the order of the column names in the partitioning column list and the value lists does not ... Range columns partitioning is similar to range partitioning, but enables you to define partitions using ranges based on multiple column ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-handling-nulls.html
Partitioning in MySQL does nothing to disallow NULL as the value of a partitioning expression, whether it is a column value or the value of a user-supplied expression. Even though it is permitted to use NULL as the value of an expression that must ...