https://dev.mysql.com/server-option-variable-reference.html
The following table lists all command-line options, system variables, and status variables applicable within mysqld. The table lists command-line options (Cmd-line), options valid in configuration files (Option file), server system variables ...
https://dev.mysql.com/func-op-summary-ref.html
GTID_SUBTRACT() Return all GTIDs in set that are not in subset. JSON_CONTAINS() Whether JSON document contains specific object at path JSON_CONTAINS_PATH() Whether JSON document contains any data at path JSON_DEPTH() Maximum depth of JSON document ...
https://dev.mysql.com/partitions-table.html
For each such row: The SUBPARTITION_NAME, SUBPARTITION_ORDINAL_POSITION, SUBPARTITION_METHOD, PARTITION_EXPRESSION, SUBPARTITION_EXPRESSION, CREATE_TIME, UPDATE_TIME, CHECK_TIME, CHECKSUM, and TABLESPACE_NAME columns are all NULL. Each row in this ...
https://dev.mysql.com/glossary.html
checksum In InnoDB, a validation mechanism to detect corruption when a page in a tablespace is read from disk into the InnoDB buffer pool. This feature is controlled by the innodb_checksums configuration option in MySQL 5.5. The innochecksum command ... These terms are commonly used in information about the MySQL database ...
https://dev.mysql.com/mysql-cluster-options-variables.html
Setting ndb_row_checksum to 0 means that row checksums are not used for new or altered tables, which has a significant impact on performance for all types of queries. This section provides information about MySQL server options, server and status ...
https://dev.mysql.com/tables-table.html
The information_schema_stats_expiry system variable defines the period of time before cached table statistics expire. If there are no cached statistics or statistics have expired, statistics are retrieved from storage engines when querying table ...
https://dev.mysql.com/binary-log.html
You can also cause the server to write checksums for the events by setting the binlog_checksum system variable. When reading back from the binary log, the master uses the event length by default, but can be made to use checksums if available by ...
https://dev.mysql.com/group-replication-limitations.html
Due to a design limitation of replication event checksums, Group Replication cannot currently make use of them. Note that the limitations and issues described for multi-primary mode groups can also apply in single-primary mode clusters during a ...
https://dev.mysql.com/group-replication-requirements.html
Due to a design limitation of replication event checksums, Group Replication cannot make use of them, and they must be disabled. Server instances that you want to use for Group Replication must satisfy the following requirements. Transactions are ...
https://dev.mysql.com/myisam-check.html
It calculates a checksum for all key values in the rows and verifies that the checksum matches the checksum for the keys in the index tree. To check a MyISAM table, use the following commands: myisamchk tbl_name This finds 99.99% of all errors.
