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https://dev.mysql.com/doc/refman/8.4/en/information-schema-statistics-table.html
However, prefix lengths for index specifications in CREATE TABLE, ALTER TABLE, and CREATE INDEX statements are interpreted as number of characters for nonbinary string types (CHAR, VARCHAR, TEXT) and number of bytes for binary string types (BINARY, ...The information_schema_stats_expiry system variable defines the period of time before cached table statistics ...
https://dev.mysql.com/doc/refman/8.4/en/symbolic-links-to-tables.html
For InnoDB tables, use the alternative technique explained in Section 17.6.1.2, “Creating Tables Externally” instead. To instruct a running MySQL server to perform the symlinking, use the DATA DIRECTORY and INDEX DIRECTORY options to CREATE ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-auto-parallel-load-syntax.html
Auto Parallel Load uses the inferred schema to generate CREATE TABLE statements. MySQL 9.0.0 adds support for Lakehouse Incremental Load with the refresh_external_tables option, see: Section 4.3.13.2, “Refresh Data Using Incremental Load”. This ...input_list is a JSON array and requires one or more valid input which can be either a valid schema name or a ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-tables-extensions-table.html
The TABLES_EXTENSIONS table provides information about table attributes defined for primary and secondary storage engines. The TABLES_EXTENSIONS table has these columns: TABLE_CATALOG The name of the catalog to which the table belongs. TABLE_SCHEMA ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-setup-objects-table.html
The setup_objects table controls whether the Performance Schema monitors particular objects. This table has a maximum size of 100 rows by default. To change the table size, modify the performance_schema_setup_objects_size system variable at server ...The order in which matching occurs matters because different matching setup_objects rows can have different ENABLED and TIMED ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-rpd-table-id-table.html
MATERIALIZATION_QUERY Available as of MySQL 9.3.0, contains the query used to create the MySQL HeatWave temporary table. The rpd_table_id table provides the ID, name, and schema of the tables loaded in MySQL HeatWave. The rpd_table_id table has ...
https://dev.mysql.com/doc/refman/8.4/en/checksum-table.html
This row-by-row calculation is what you get with the EXTENDED clause, with InnoDB and all other storage engines other than MyISAM, and with MyISAM tables not created with the CHECKSUM=1 clause. For MyISAM tables created with the CHECKSUM=1 clause, ...[QUICK | EXTENDED] CHECKSUM TABLE reports a checksum for the contents of a ...You can use this statement to verify that the contents are the same before and after a backup, ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-install-example-data.html
To specify this, use the ENGINE=NDBCLUSTER or ENGINE=NDB option when creating the table: CREATE TABLE tbl_name (col_name column_definitions) ENGINE=NDBCLUSTER; Alternatively, for an existing table that uses a different storage engine, use ALTER ...
https://dev.mysql.com/doc/ndbapi/en/ndb-event.html
Event Constructor Description The Event constructor creates a new instance with a given name, and optionally associated with a table. A blob table event is created for each blob attribute, and blob events are handled as part of main table events.
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-performance-page-per-table-stats.html
By default, rows are sorted by descending total wait time (tables with most contention first). Table 5.10 Per Table Statistics Dashboard NameDescription Table Name The table name. Delete Latency The total wait time of timed delete I/O events for the ...