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https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-index-cache-table.html
The same word can occur several times within the cache table, once for each combination of DOC_ID and POSITION values. The INNODB_FT_INDEX_CACHE table provides token information about newly inserted rows in a FULLTEXT index. Before querying it, set ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-index-table-table.html
The same word can occur several times within the cache table, once for each combination of DOC_ID and POSITION values. The INNODB_FT_INDEX_TABLE table provides information about the inverted index used to process text searches against the FULLTEXT ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-session-temp-tablespaces-table.html
Session temporary tablespaces are recreated each time the server is started. The INNODB_SESSION_TEMP_TABLESPACES table provides metadata about session temporary tablespaces used for internal and user-created temporary tables. The ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-introduction.html
Other terms that are sometimes used for this information are data dictionary and system catalog. Performance Considerations INFORMATION_SCHEMA queries that search for information from more than one database might take a long time and impact ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-referential-constraints-table.html
The REFERENTIAL_CONSTRAINTS table has these columns: CONSTRAINT_CATALOG The name of the catalog to which the constraint belongs. CONSTRAINT_SCHEMA The name of the schema (database) to which the constraint belongs. UNIQUE_CONSTRAINT_CATALOG The name ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-triggers-table.html
This is a TIMESTAMP(2) value (with a fractional part in hundredths of seconds) for triggers. To see information about a table's triggers, you must have the TRIGGER privilege for the table. The TRIGGERS table has these columns: TRIGGER_CATALOG The ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-views-table.html
IS_UPDATABLE MySQL sets a flag, called the view updatability flag, at CREATE VIEW time. You must have the SHOW VIEW privilege to access this table. The VIEWS table has these columns: TABLE_CATALOG The name of the catalog to which the view belongs.
https://dev.mysql.com/doc/refman/8.0/en/innochecksum.html
To turn on verbose mode, run: innochecksum --verbose To turn off verbose mode, run: innochecksum --verbose=FALSE The --verbose option and --log option can be specified at the same time. This tool reads an InnoDB tablespace file, calculates the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-analyze-table-complexity.html
Using these parameters, an approximate formula for estimating ANALYZE TABLE complexity would be: The value of innodb_stats_persistent_sample_pages * number of indexed columns in a table * the number of partitions Typically, the greater the resulting ... ANALYZE TABLE complexity for InnoDB tables is dependent on: The number of pages sampled, as defined by ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-backup-recovery.html
For information about point-in-time recovery, recovery from disk failure or corruption, and how InnoDB performs crash recovery, see Section 17.18.2, “InnoDB Recovery”. This section covers topics related to InnoDB backup and recovery. For ...