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https://dev.mysql.com/doc/refman/8.0/en/group-replication-replication-group-members.html
The performance_schema.replication_group_members table is used for monitoring the status of the different server instances that are members of the group. The information in the table is updated whenever there is a view change, for example when the ...
https://dev.mysql.com/doc/refman/8.0/en/help.html
Example: HELP 'fake' Yields: Nothing found Please try to run 'help contents' for a list of all accessible topics Result set containing a single row This means that the search string yielded a hit for the help topic. HELP 'search_string' The HELP ...
https://dev.mysql.com/doc/refman/8.0/en/hexadecimal-literals.html
Hexadecimal literal values are written using X'val' or 0xval notation, where val contains hexadecimal digits (0..9, A..F). Lettercase of the digits and of any leading X does not matter. A leading 0x is case-sensitive and cannot be written as 0X.
https://dev.mysql.com/doc/refman/8.0/en/identifiers.html
mysql> SET sql_mode='ANSI_QUOTES'; mysql> CREATE TABLE "test" (col INT); Query OK, 0 rows affected (0.00 sec) The ANSI_QUOTES mode causes the server to interpret double-quoted strings as identifiers. Certain objects within MySQL, including ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-events-table.html
The EVENTS table provides information about Event Manager events, which are discussed in Section 27.4, “Using the Event Scheduler”. The EVENTS table has these columns: EVENT_CATALOG The name of the catalog to which the event belongs.
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-cached-indexes-table.html
row *************************** SPACE_ID: 4294967294 INDEX_ID: 65 N_CACHED_PAGES: 45 This query returns the number of index pages cached in the InnoDB buffer pool for each index, using the INNODB_INDEXES and INNODB_TABLES tables to resolve the table ... The INNODB_CACHED_INDEXES table reports the number of index pages cached in the InnoDB buffer pool for each ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-datafiles-table.html
row *************************** SPACE: 57 PATH: ./test/t1.ibd Notes You must have the PROCESS privilege to query this table. The INNODB_DATAFILES table provides data file path information for InnoDB file-per-table and general tablespaces. For ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-fields-table.html
row *************************** INDEX_ID: 117 NAME: col1 POS: 0 Notes You must have the PROCESS privilege to query this table. The INNODB_FIELDS table provides metadata about the key columns (fields) of InnoDB indexes. For related usage information ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-foreign-cols-table.html
row *************************** ID: test/fk1 FOR_COL_NAME: parent_id REF_COL_NAME: id POS: 0 Notes You must have the PROCESS privilege to query this table. The INNODB_FOREIGN_COLS table provides status information about InnoDB foreign key columns.
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-foreign-table.html
row *************************** ID: test/fk1 FOR_NAME: test/child REF_NAME: test/parent N_COLS: 1 TYPE: 1 Notes You must have the PROCESS privilege to query this table. For related usage information and examples, see Section 17.15.3, “InnoDB ...