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https://dev.mysql.com/doc/refman/8.0/en/show-replicas.html
From MySQL 8.0.22, use SHOW REPLICAS in place of SHOW SLAVE HOSTS, which is deprecated from that release. {SHOW REPLICAS} Displays a list of replicas currently registered with the source. SHOW REPLICAS should be executed on a server that acts as a ...
https://dev.mysql.com/doc/refman/8.0/en/sorting-rows.html
You may have noticed in the preceding examples that the result rows are displayed in no particular order. It is often easier to examine query output when the rows are sorted in some meaningful way. This means that the order is undefined for columns ...
https://dev.mysql.com/doc/refman/8.0/en/subqueries.html
All subquery forms and operations that the SQL standard requires are supported, as well as a few features that are MySQL-specific. Beginning with MySQL 8.0.19, TABLE and VALUES statements can be used in subqueries. Here is an example of a subquery: ...
https://dev.mysql.com/doc/refman/8.0/en/subquery-errors.html
In MySQL 8.0.19 and later, all of the errors described in this section also apply when using TABLE in subqueries. Incorrect number of rows from subquery: ERROR 1242 (ER_SUBSELECT_NO_1_ROW) SQLSTATE = 21000 Message = "Subquery returns more than 1 ...
https://dev.mysql.com/doc/refman/8.0/en/sys-extract-schema-from-file-name.html
Example mysql> SELECT sys.extract_schema_from_file_name('/usr/local/mysql/data/world/City.ibd'); +---------------------------------------------------------------------------+ | ... Given a file path name, returns the path component that represents ...
https://dev.mysql.com/doc/refman/8.0/en/sys-extract-table-from-file-name.html
Example mysql> SELECT sys.extract_table_from_file_name('/usr/local/mysql/data/world/City.ibd'); +--------------------------------------------------------------------------+ | sys.extract_table_from_file_name('/usr/local/mysql/data/world/City.ibd') | ... Given a file path name, returns the path component that represents the table ...
https://dev.mysql.com/doc/refman/8.0/en/sys-format-bytes.html
Note As of MySQL 8.0.16, format_bytes() is deprecated and subject to removal in a future MySQL version. Example mysql> SELECT sys.format_bytes(512), sys.format_bytes(18446644073709551615); ...Applications that use it should be migrated to use the ...
https://dev.mysql.com/doc/refman/8.0/en/sys-format-path.html
Example mysql> SELECT sys.format_path('/usr/local/mysql/data/world/City.ibd'); +---------------------------------------------------------+ | sys.format_path('/usr/local/mysql/data/world/City.ibd') | ... Given a path name, returns the modified path ...
https://dev.mysql.com/doc/refman/8.0/en/sys-ps-thread-id.html
Note As of MySQL 8.0.16, ps_thread_id() is deprecated and subject to removal in a future MySQL version. Example mysql> SELECT sys.ps_thread_id(260); +-----------------------+ | sys.ps_thread_id(260) | +-----------------------+ | 285 | ...
https://dev.mysql.com/doc/refman/8.0/en/sys-quote-identifier.html
Example mysql> SELECT sys.quote_identifier('plain'); +-------------------------------+ | sys.quote_identifier('plain') | +-------------------------------+ | `plain` | +-------------------------------+ mysql> SELECT sys.quote_identifier('trick`ier'); ... Given a string argument, this function produces a quoted identifier suitable for inclusion in SQL ...