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https://dev.mysql.com/doc/refman/8.4/en/keyring-system-variables.html
These variables are unavailable unless the appropriate keyring plugin is installed (see Section 8.4.4.3, “Keyring Plugin Installation”). keyring_aws_cmk_id Command-Line Format --keyring-aws-cmk-id=value System Variable keyring_aws_cmk_id Scope ...
https://dev.mysql.com/doc/refman/8.4/en/diagnostics-area.html
SQL statements produce diagnostic information that populates the diagnostics area. Standard SQL has a diagnostics area stack, containing a diagnostics area for each nested execution context. Standard SQL also supports GET STACKED DIAGNOSTICS syntax ...
https://dev.mysql.com/doc/ndbapi/en/ndb-dictionary.html
Return value A pointer to the table, or NULL if there is no table with the name supplied. This means that they cannot be accessed by MySQL clients, and that they cannot be replicated. For these reasons, it is often preferable to avoid working with ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-partitions-table.html
SUBPARTITION_NAME If the PARTITIONS table row represents a subpartition, the name of subpartition; otherwise NULL. For partitions whose PARTITION_METHOD is other than RANGE or LIST, this column is always NULL. However, the values of the ...Each row ...
https://dev.mysql.com/doc/refman/8.4/en/flow-control-functions.html
If no comparison or condition is true, the result after ELSE is returned, or NULL if there is no ELSE part. The CASE statement cannot have an ELSE NULL clause, and it is terminated with END CASE instead of END. If only one of expr2 or expr3 is ...
https://dev.mysql.com/doc/refman/8.4/en/type-conversion.html
The following rules describe how conversion occurs for comparison operations: If one or both arguments are NULL, the result of the comparison is NULL, except for the NULL-safe <=> equality comparison operator. When an operator is used with operands ...
https://dev.mysql.com/doc/ndbapi/en/ndbapi-examples-common-files.html
*/ class ReadOnlyArrayAdapter { public: ReadOnlyArrayAdapter() {} enum ErrorType {Success, InvalidColumnType, InvalidArrayType, InvalidNullColumn, InvalidNullAttribute, InvalidNullaRef, BytesOutOfRange, UnknownError}; /* Return a C++ string from the ... In the NDB Cluster source distribution, the storage/ndb/ndbapi-examples directory storage/ndb/ndbapi-examples/common contains four header files with utilities for use in example NDB API ...
https://dev.mysql.com/doc/internals/en/transformation-scalar-in.html
On a value request (one of val, val_int, or val_str methods) it evaluates the left expression of the IN by storing its value in a cache item (one of Item_cache* items), then it tests the cache to see whether it is NULL. If left expression (cache) is ... To rewrite a scalar IN subquery, the Item_in_subselect::single_value_transformer method is ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-disk-data-objects.html
NDB Cluster Disk Data storage is implemented using the following objects: Tablespace: Acts as containers for other Disk Data objects. A tablespace contains one or more data files and one or more undo log file groups. Undo log file: Contains undo ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-online-add-node-example.html
In this section we provide a detailed example illustrating how to add new NDB Cluster data nodes online, starting with an NDB Cluster having 2 data nodes in a single node group and concluding with a cluster having 4 data nodes in 2 node groups.