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https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-default-stopword-table.html
The INNODB_FT_DEFAULT_STOPWORD table holds a list of stopwords that are used by default when creating a FULLTEXT index on InnoDB tables. For information about the default InnoDB stopword list and how to define your own stopword lists, see Section ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-temp-table-info-table.html
The number includes three hidden columns created by InnoDB (DB_ROW_ID, DB_TRX_ID, and DB_ROLL_PTR). row *************************** TABLE_ID: 97 NAME: #sql8c88_43_0 N_COLS: 4 SPACE: 76 Notes This table is useful primarily for expert-level monitoring. The INNODB_TEMP_TABLE_INFO table provides information about user-created InnoDB temporary tables that are active in an InnoDB ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-ndb-transid-mysql-connection-map-table.html
The ndb_transid_mysql_connection_map table provides a mapping between NDB transactions, NDB transaction coordinators, and MySQL Servers attached to an NDB Cluster as API nodes. This information is used when populating the server_operations and ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-processlist-table.html
A value of system user refers to a nonclient thread spawned by the server to handle tasks internally, for example, a delayed-row handler thread or an I/O or SQL thread used on replica hosts. Important INFORMATION_SCHEMA.PROCESSLIST is deprecated ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-st-spatial-reference-systems-table.html
row *************************** SRS_NAME: WGS 84 SRS_ID: 4326 ORGANIZATION: EPSG ORGANIZATION_COORDSYS_ID: 4326 DEFINITION: GEOGCS["WGS 84",DATUM["World Geodetic System 1984", SPHEROID["WGS 84",6378137,298.257223563, ... The ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tp-thread-group-stats-table.html
Note As of MySQL 8.0.14, the thread pool INFORMATION_SCHEMA tables are also available as Performance Schema tables. (See Section 29.12.16, “Performance Schema Thread Pool Tables”.) The INFORMATION_SCHEMA tables are deprecated; expect them to be ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tp-thread-state-table.html
For example, if an application uses this query: SELECT * FROM INFORMATION_SCHEMA.TP_THREAD_STATE; The application should use this query instead: SELECT * FROM performance_schema.tp_thread_state; The TP_THREAD_STATE table has one row per thread ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-files-table.html
row *************************** FILE_ID: 0 FILE_NAME: ./ibdata1 FILE_TYPE: TABLESPACE TABLESPACE_NAME: innodb_system FREE_EXTENTS: 0 TOTAL_EXTENTS: 12 EXTENT_SIZE: 1048576 INITIAL_SIZE: 12582912 MAXIMUM_SIZE: NULL AUTOEXTEND_SIZE: 67108864 ...mysql> ... The Information Schema FILES table provides metadata about all InnoDB tablespace types including file-per-table tablespaces, general tablespaces, the system tablespace, temporary table tablespaces, and undo tablespaces (if ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-ddl.html
If this option is set to a value greater than 1, use READ UNCOMMITTED queries to find rows that were just inserted. If you increase daemon_memcached_r_batch_size and daemon_memcached_w_batch_size substantially from their default value of 1, the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-developing.html
You might adapt parts of your application that perform single-row queries, inserts, updates, or deletes, to improve performance in critical sections of code. Typically, writing an application for the InnoDB memcached plugin involves some degree of ...