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https://dev.mysql.com/doc/refman/8.0/en/mysqlbinlog-hexdump.html
Master ID: The server ID of the replication source server that created the event. For more information about binary log format, see MySQL Internals: The Binary Log. In the example shown, '9d fc 5c 43' is the representation of '051024 17:24:13' in ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlcheck.html
To create or modify a login path file, use the mysql_config_editor utility. The mysqlcheck client performs table maintenance: It checks, repairs, optimizes, or analyzes tables. Each table is locked and therefore unavailable to other sessions while ...
https://dev.mysql.com/doc/refman/8.0/en/mysqld-safe.html
--core-file-size=size Command-Line Format --core-file-size=size Type String The size of the core file that mysqld should be able to create. mysqld_safe is the recommended way to start a mysqld server on Unix. mysqld_safe adds some safety features ...
https://dev.mysql.com/doc/refman/8.0/en/mysqlshow.html
To create or modify a login path file, use the mysql_config_editor utility. The mysqlshow client can be used to quickly see which databases exist, their tables, or a table's columns or indexes. The same information can be obtained by using those ...
https://dev.mysql.com/doc/refman/8.0/en/obtaining-loadable-function-information.html
The Performance Schema user_defined_functions table contains information about the currently installed loadable functions: SELECT * FROM performance_schema.user_defined_functions; The mysql.func system table also lists installed loadable functions, ...This difference makes user_defined_functions preferable to mysql.func for checking which loadable functions are ...
https://dev.mysql.com/doc/refman/8.0/en/optimization-indexes.html
The best way to improve the performance of SELECT operations is to create indexes on one or more of the columns that are tested in the query. Although it can be tempting to create an indexes for every possible column used in a query, unnecessary ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-trace-implementation.html
A trace is started by creating an instance of Opt_trace_start; information is added to this trace by creating instances of Opt_trace_object and Opt_trace_array, and by using the add() methods of these classes.
https://dev.mysql.com/doc/refman/8.0/en/optimizing-myisam-bulk-data-loading.html
This creates the index tree in memory before writing it to disk, which is much faster than updating the index during LOAD DATA because it avoids lots of disk seeks. The main difference between automatic optimization and using the procedure ... These ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-spatial-analysis.html
It is also possible to create normal indexes on spatial columns. Other storage engines support non-SPATIAL indexes, as described in Section 15.1.15, “CREATE INDEX Statement”. For MyISAM and InnoDB tables, search operations in columns containing ...
https://dev.mysql.com/doc/refman/8.0/en/option-file-options.html
To create or modify a login path file, use the mysql_config_editor utility. Most MySQL programs that support option files handle the following options. Because these options affect option-file handling, they must be given on the command line and ...