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https://dev.mysql.com/doc/refman/8.0/en/creating-database.html
(Under Windows, this restriction does not apply, although you must refer to databases and tables using the same lettercase throughout a given query. Discuss this with the administrator or see Section 8.2, “Access Control and Account Management”.
https://dev.mysql.com/doc/refman/8.0/en/sys-host-summary-by-file-io.html
The host_summary_by_file_io and x$host_summary_by_file_io views have these columns: host The host from which the client connected. Rows for which the HOST column in the underlying Performance Schema table is NULL are assumed to be for background ...
https://dev.mysql.com/doc/refman/8.0/en/sys-user-summary-by-file-io.html
The user_summary_by_file_io and x$user_summary_by_file_io views have these columns: user The client user name. Rows for which the USER column in the underlying Performance Schema table is NULL are assumed to be for background threads and are ...By ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-cpudata.html
The cpudata table provides data about CPU usage during the last second.
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-performance-timers-table.html
The Performance Schema determines this value by invoking the timer 20 times during initialization and picking the smallest value. The total overhead really is twice this amount because the instrumentation invokes the timer at the start and end of ...
https://dev.mysql.com/doc/refman/8.0/en/batch-mode.html
In the previous sections, you used mysql interactively to enter statements and view the results. If you want the script to continue even if some of the statements in it produce errors, you should use the --force command-line option. Why use a ...
https://dev.mysql.com/doc/refman/8.0/en/compiling-for-debugging.html
In this case, you can try to add -g using the CMAKE_C_FLAGS and CMAKE_CXX_FLAGS CMake options and not use -DWITH_DEBUG=1. If they find something “unexpected,” an entry is written to stderr, which mysqld_safe directs to the error log! This also ... If you have some very specific problem, you can always try to debug ...
https://dev.mysql.com/doc/refman/8.0/en/corrupted-myisam-tables.html
You are using an external program (such as myisamchk) to modify a table that is being modified by the server at the same time. You can check the health of a MyISAM table using the CHECK TABLE statement, and repair a corrupted MyISAM table with ...
https://dev.mysql.com/doc/refman/8.0/en/debugging-server.html
If mysqld does not want to start, verify that you have no my.cnf files that interfere with your setup! You can check your my.cnf arguments with mysqld --print-defaults and avoid using them by starting with mysqld --no-defaults .... If mysqld starts ... If you are using some functionality that is very new in MySQL, you can try to run mysqld with the --skip-new option (which disables all new, potentially unsafe ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-session-temp-tablespaces-table.html
The INNODB_SESSION_TEMP_TABLESPACES table provides metadata about session temporary tablespaces used for internal and user-created temporary tables. A range of 400 thousand space IDs is reserved for session temporary tablespaces. Session temporary ...The INNODB_SESSION_TEMP_TABLESPACES table has these columns: ID The process or session ...