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https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-relational-tables.html
See Section 22.4.2, “Download and Import world_x Database” for instructions on setting up the world_x schema sample. You can also use X DevAPI to work with relational tables. In MySQL, each relational table is associated with a particular ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-trace-testing.html
This feature is tested in mysql-test/suite/opt_trace and unittest/gunit/opt_trace-t. ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-tracing.html
The MySQL optimizer includes the capability to perform tracing; the interface is provided by a set of optimizer_trace_xxx system variables and the INFORMATION_SCHEMA.OPTIMIZER_TRACE table.
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb.html
InnoDB is the storage engine that MySQL customers typically use in production databases where reliability and concurrency are important. This section explains how to optimize database operations for InnoDB tables.
https://dev.mysql.com/doc/refman/8.0/en/optimizing-subqueries.html
See also Section 10.2.2, “Optimizing Subqueries, Derived Tables, View References, and Common Table Expressions”. Development is ongoing, so no optimization tip is reliable for the long term. The following list provides some interesting tricks ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-accounts-table.html
For each account, the table counts the current and total number of connections. The accounts table contains a row for each account that has connected to the MySQL server. To set the table size explicitly, set the performance_schema_accounts_size ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-clone-status-table.html
BEGIN_TIME A timestamp in 'YYYY-MM-DD hh:mm:ss[.fraction]' format that shows when the cloning operation started. END_TIME A timestamp in 'YYYY-MM-DD hh:mm:ss[.fraction]' format that shows when the cloning operation finished. Note The Performance ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-stages-history-long-table.html
For more information about the relationship between the three stage event tables, see Section 29.9, “Performance Schema Tables for Current and Historical Events”. The events_stages_history_long table contains the N most recent stage events that ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-statements-history-long-table.html
For more information about the relationship between the three events_statements_xxx event tables, see Section 29.9, “Performance Schema Tables for Current and Historical Events”. The events_statements_history_long table contains the N most ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-events-transactions-history-long-table.html
For more information about the relationship between the three transaction event tables, see Section 29.9, “Performance Schema Tables for Current and Historical Events”. The events_transactions_history_long table contains the N most recent ...