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https://dev.mysql.com/doc/refman/8.0/en/reproducible-test-case.html
For information about steps to take when encountering InnoDB table corruption, see Section 1.5, “How to Report Bugs or Problems”. If you encounter corrupted MyISAM tables or if mysqld always fails after some update statements, you can test ...
https://dev.mysql.com/doc/refman/8.0/en/sys-innodb-buffer-stats-by-table.html
These views summarize the information in the INFORMATION_SCHEMA INNODB_BUFFER_PAGE table, grouped by schema and table. Warning Querying views that access the INNODB_BUFFER_PAGE table can affect performance. Do not query these views on a production ...To avoid impacting performance on a production system, reproduce the issue you want to investigate and query buffer pool statistics on a test ...
https://dev.mysql.com/doc/refman/8.0/en/federated-description.html
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 and the associated data. When you create a FEDERATED table, the table definition is the same, but the ...A ...The statement is sent to the remote server using the MySQL client ...
https://dev.mysql.com/doc/refman/8.0/en/nested-join-optimization.html
The syntax of table_factor is extended in comparison with the SQL Standard. The latter accepts only table_reference, not a list of them inside a pair of parentheses. This is a conservative extension if we consider each comma in a list of ...The ...
https://dev.mysql.com/doc/refman/8.0/en/roles.html
You should keep in mind that this distinction is not immutable; a user with appropriate privileges can lock or unlock roles or (other) users after they have been created. The following list summarizes role-management capabilities provided by MySQL: ...Like user accounts, roles can have privileges granted to and revoked from ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-limitations.html
The following limitations apply to online DDL operations: The table is copied when creating an index on a TEMPORARY TABLE. Tables created before MySQL 5.6 that include temporal columns (DATE, DATETIME or TIMESTAMP) and have not been rebuilt using ...The ALTER TABLE clause LOCK=NONE is not permitted if there are ON...CASCADE or ON...SET NULL constraints on the ...When the DML operations are applied, it is possible to encounter a duplicate key entry error (ERROR 1062 (23000): ...
https://dev.mysql.com/doc/refman/8.0/en/bug-reports.html
If a database table is related to the problem, include the output from the SHOW CREATE TABLE db_name.tbl_name statement in the bug report. You should also include the output from SHOW CREATE TABLE tbl_name for each table that is involved. If you ...
https://dev.mysql.com/doc/refman/8.0/en/programs-overview.html
mysqladmin A client that performs administrative operations, such as creating or dropping databases, reloading the grant tables, flushing tables to disk, and reopening log files. This program creates the SSL certificate and key files and RSA ...
https://dev.mysql.com/doc/refman/8.0/en/known-issues.html
Creation of a table of type MERGE does not check whether the underlying tables are compatible types. Even if you use lower_case_table_names=2 (which enables MySQL to remember the case used for databases and table names), MySQL does not remember the ... This section lists known issues in recent versions of ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-remote.html
Use this option if you do not want to remove existing user-created data (schemas, tables, tablespaces) and binary logs from the recipient data directory. When the optional DATA DIRECTORY [=] 'clone_dir' clause is not used, a cloning operation ...The ... The clone plugin supports the following syntax for cloning remote data; that is, cloning data from a remote MySQL server instance (the donor) and transferring it to the MySQL instance where the cloning operation was initiated (the ...