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https://dev.mysql.com/doc/refman/8.4/en/information-schema-innodb-table-reference.html
The following table summarizes INFORMATION_SCHEMA InnoDB tables. For greater detail, see the individual table descriptions. Table 28.3 INFORMATION_SCHEMA InnoDB Tables Table Name Description INNODB_BUFFER_PAGE Pages in InnoDB buffer pool ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-introduction.html
You can filter, sort, concatenate, and transform the results from INFORMATION_SCHEMA queries into whatever format your application needs, such as a data structure or a text representation to parse. INFORMATION_SCHEMA provides access to database ...
https://dev.mysql.com/doc/refman/8.4/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/8.4/en/information-schema-optimizer-trace-table.html
The OPTIMIZER_TRACE table has these columns: QUERY The text of the traced statement. The OPTIMIZER_TRACE table provides information produced by the optimizer tracing capability for traced statements. MISSING_BYTES_BEYOND_MAX_MEM_SIZE Each ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-partitions-table.html
PARTITION_COMMENT The text of the comment, if the partition has one. Each row in this table corresponds to an individual partition or subpartition of a partitioned table. The PARTITIONS table has these columns: TABLE_CATALOG The name of the catalog ...
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/information-schema-table-reference.html
The following table summarizes all available INFORMATION_SCHEMA tables. For greater detail, see the individual table descriptions. Table 28.1 INFORMATION_SCHEMA Tables Table Name Description Deprecated ADMINISTRABLE_ROLE_AUTHORIZATIONS Grantable ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-triggers-table.html
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 name of the catalog to which the trigger belongs. TRIGGER_SCHEMA The name of the schema ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-backup.html
Dumped tables are stored into text files that are human-readable, so spotting table corruption becomes easier. The key to safe database management is making regular backups. Hot and cold backups are physical backups that copy actual data files, ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-benefits.html
The storage layout for table data is more efficient for BLOB and long text fields, with the DYNAMIC row format. InnoDB tables have the following benefits: If the server unexpectedly exits because of a hardware or software issue, regardless of what ...