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https://dev.mysql.com/doc/refman/8.0/en/faqs-migration.html
This may seem more complicated, but ultimately saves time and trouble. Where can I find information on how to upgrade or downgrade MySQL? A.8.1. Where can I find information on how to upgrade or downgrade MySQL? For detailed upgrade information, see ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-security.html
Does MySQL include support for Roles Based Access Control (RBAC)? Not at this time. Where can I find documentation that addresses security issues for MySQL? A.9.2. Is SSL support built into MySQL binaries, or must I recompile the binary myself to ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-sql-modes.html
Does strict mode impact performance? The intensive validation of input data that some settings requires more time than if the validation is not done. What is the default server SQL mode when MySQL 8.0 is installed? A.3.1. What are server SQL modes? ...
https://dev.mysql.com/doc/refman/8.0/en/federated-description.html
To read a result set, it uses mysql_store_result() and fetches rows one at a time using mysql_fetch_row(). When you create a table using one of the standard storage engines (such as MyISAM, CSV or InnoDB), the table consists of the table definition ...
https://dev.mysql.com/doc/refman/8.0/en/firewall-installation.html
MySQL Enterprise Firewall installation is a one-time operation that installs the elements described in Section 8.4.7.1, “Elements of MySQL Enterprise Firewall”. Installation can be performed using a graphical interface or manually: On Windows, ...
https://dev.mysql.com/doc/refman/8.0/en/full-disk.html
The thread is aborted the next time it checks the disk (in one minute). This section describes how MySQL responds to disk-full errors (such as “no space left on device”), and to quota-exceeded errors (such as “write failed” or “user block ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-restrictions.html
For InnoDB, all DML operations (INSERT, UPDATE, DELETE) involving columns with full-text indexes are processed at transaction commit time. Full-text searches are supported for InnoDB and MyISAM tables only. The exception is that for Unicode, the ...
https://dev.mysql.com/doc/refman/8.0/en/function-optimization.html
For example: SELECT * FROM t WHERE partial_key=5 AND some_column=RAND(); If the optimizer can use partial_key to reduce the set of rows selected, RAND() is executed fewer times, which diminishes the effect of nondeterminism on optimization. A ...
https://dev.mysql.com/doc/refman/8.0/en/get-diagnostics.html
This shows that you can use GET DIAGNOSTICS multiple times to retrieve information about a statement as long as the current diagnostics area has not been cleared. GET [CURRENT | STACKED] DIAGNOSTICS { statement_information_item [, ...
https://dev.mysql.com/doc/refman/8.0/en/group-by-modifiers.html
In this case, each time there is a change in value in any but the last grouping column, the query produces an extra super-aggregate summary row. The GROUP BY clause permits a WITH ROLLUP modifier that causes summary output to include extra rows ...