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https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema.html
This section provides information and usage examples for InnoDB INFORMATION_SCHEMA tables. InnoDB INFORMATION_SCHEMA tables provide metadata, status information, and statistics about various aspects of the InnoDB storage engine. You can view a list ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-cluster-locks.html
The cluster_locks table provides information about current lock requests holding and waiting for locks on NDB tables in an NDB Cluster, and is intended as a companion table to cluster_operations. Information obtain from the cluster_locks table may ...The transaction ID (transid column) is the identifier generated by the NDB API for the transaction requesting or holding the current ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-dict-obj-info.html
The dict_obj_info table provides information about NDB data dictionary (DICT) objects such as tables and indexes. (The dict_obj_types table can be queried for a list of all the types.) This information includes the object's type, state, parent ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-dictionary-columns.html
The table provides NDB dictionary information about columns of NDB tables.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ps-tables.html
Thread names are shown in the name column of the threads and setup_threads tables using the format prefix/plugin_name/thread_name. Using the thread ID or OS thread ID for a given thread in the threads or setup_threads table, it is possible to obtain ... NDB 8.0 provides information in the MySQL Performance Schema about threads and transaction memory usage; NDB 8.0.29 adds ndbcluster plugin threads, and NDB 8.0.30 adds instrumenting for transaction batch ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statements-with-full-table-scans.html
These views display normalized statements that have done full table scans. The statements_with_full_table_scans and x$statements_with_full_table_scans views have these columns: query The normalized statement string. no_index_used_count The total ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statements-with-temp-tables.html
These views list normalized statements that have used temporary tables. By default, rows are sorted by descending number of on-disk temporary tables used and descending number of in-memory temporary tables used. The statements_with_temp_tables and ...db The default database for the statement, or NULL if there is ...
https://dev.mysql.com/doc/refman/8.0/en/deleting-from-related-tables.html
If the total length of the DELETE statement for related_table is more than the default value of the max_allowed_packet system variable, you should split it into smaller parts and execute multiple DELETE statements. You probably get the fastest ...
https://dev.mysql.com/doc/refman/8.0/en/table-definition-issues.html
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https://dev.mysql.com/doc/refman/8.0/en/table-maintenance-statements.html
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