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https://dev.mysql.com/doc/refman/5.7/en/sys-user-summary-by-statement-latency.html
Rows for which the USER column in the underlying Performance Schema table is NULL are assumed to be for background threads and are reported with a host name of background. The user_summary_by_statement_latency and x$user_summary_by_statement_latency ...
https://dev.mysql.com/doc/refman/5.7/en/sys-user-summary-by-statement-type.html
Rows for which the USER column in the underlying Performance Schema table is NULL are assumed to be for background threads and are reported with a host name of background. These views summarize informaion about statements executed, grouped by user ...
https://dev.mysql.com/doc/refman/5.7/en/sys-user-summary.html
Rows for which the USER column in the underlying Performance Schema table is NULL are assumed to be for background threads and are reported with a host name of background. These views summarize statement activity, file I/O, and connections, grouped ...
https://dev.mysql.com/doc/refman/5.7/en/create-event.html
CREATE [DEFINER = user] EVENT [IF NOT EXISTS] event_name ON SCHEDULE schedule [ON COMPLETION [NOT] PRESERVE] [ENABLE | DISABLE | DISABLE ON SLAVE] [COMMENT 'string'] DO event_body; schedule: { AT timestamp [+ INTERVAL interval] ... comment may be ...The event does not run unless the Event Scheduler is ...
https://dev.mysql.com/doc/refman/5.7/en/create-function-loadable.html
CREATE [AGGREGATE] FUNCTION function_name RETURNS {STRING|INTEGER|REAL|DECIMAL} SONAME shared_library_name This statement loads the loadable function named function_name. DECIMAL is a legal value after RETURNS, but currently DECIMAL functions ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-benefits.html
InnoDB can handle composing and decomposing multiple column values into a single memcached item value, reducing the amount of string parsing and concatenation required in your application. For example, you can store the string value 2|4|6|8 in the ...The combination of InnoDB tables and memcached offers advantages over using either by ...
https://dev.mysql.com/doc/refman/5.7/en/multibyte-characters.html
If you want to add support for a new character set named MYSET that includes multibyte characters, you must use multibyte character functions in the ctype-MYSET.c source file in the strings directory. Look at the ctype-*.c files in the strings ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-install-configuration.html
Each data node or SQL node requires a my.cnf file that provides two pieces of information: a connection string that tells the node where to find the management node, and a line telling the MySQL server on this host (the machine hosting the data ...
https://dev.mysql.com/doc/refman/5.7/en/mysqld-multi.html
--password=password Command-Line Format --password=string Type String Default Value [none] The password of the MySQL account to use when invoking mysqladmin. --user=user_name Command-Line Format --user=name Type String Default Value root The user ...
https://dev.mysql.com/doc/refman/5.7/en/optimize-numeric.html
For unique IDs or other values that can be represented as either strings or numbers, prefer numeric columns to string columns. Since large numeric values can be stored in fewer bytes than the corresponding strings, it is faster and takes less ...If ...