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https://dev.mysql.com/doc/internals/en/implementing-position-method.html
The [custom-engine.html#custom-engine-api-reference-position position()] method is called after every call to rnd_next() if the data needs to be reordered: void ha_foo::position(const byte *record) It stores a "position" of a record in this->ref.
https://dev.mysql.com/doc/internals/en/implementing-rnd-next-method.html
(The table definition is stored in the .frm file, and the optimizer and the handler are both able to access table metadata from the same source, its TABLE structure). After the table is initialized, the MySQL server will call the handler's ...
https://dev.mysql.com/doc/internals/en/null-bitmap.html
The NULL-bitmap needs enough space to store a possible NULL bit for each column that is sent. The binary protocol sends NULL values as bits inside a bitmap instead of a full byte as the ProtocolText::ResultsetRow does. If many NULL values are sent, ...
https://dev.mysql.com/doc/internals/en/transactions-notes-on-ddl-and-normal-transaction.html
This diversity makes it hard to say what will happen if by chance a stored function is invoked during a DDL statement -- it's not clear whether any modifications it makes will be committed or not. Fortunately, SQL grammar allows only a few DDL ...
https://dev.mysql.com/doc/mysql-installer/en/server-advanced-options.html
Lower Case Sets the lower_case_table_names option value to 1 (default), in which table names are stored in lowercase on disk and comparisons are not case-sensitive. Preserve Given Case Sets the lower_case_table_names option value to 2, in which ...
https://dev.mysql.com/doc/ndbapi/en/mccj-clusterj-columnmetadata.html
Table 4.21 javaType() Parameter Description return the java type of the column 4.3.1.11.6 maximumLength() public abstract int maximumLength(); Return the maximum number of bytes that can be stored in the column after translating the characters using ...Table 4.17 charsetName() Parameter Description return the charset name 4.3.1.11.2 columnType() public abstract ColumnType columnType(); Return the type of the ...
MySQL NDB Cluster API Developer Guide :: 4.2.2.5 ClusterJ Mappings Between MySQL and Java Data Types
https://dev.mysql.com/doc/ndbapi/en/mccj-using-clusterj-mappings.html
That is, if you use ClusterJ to store or retrieve data, you obtain the same value as if you used the JDBC driver directly or through JPA. Data is presented to the application exactly as it is stored. ClusterJ provides mappings for all of the common ...
https://dev.mysql.com/doc/ndbapi/en/mgm-concepts.html
The data which is specific to a particular event is stored in a union between structures; use ndb_logevent::type to decide which structure is valid. This section describes concepts basic to the NDB Cluster MGM API. NdbMgmHandle Working with Log ...
https://dev.mysql.com/doc/ndbapi/en/mgm-functions-cluster-log.html
A severity level is stored at position ndb_mgm_clusterlog_level; for example the error level is stored at position NDB_MGM_EVENT_SEVERITY_ERROR. This section provides information about the functions available in the MGM API for controlling the ...
https://dev.mysql.com/doc/ndbapi/en/ndb-ndbeventoperation.html
If the attribute value is NULL, then the attribute value is stored only in the NdbRecAttr object returned by this method. If the attribute value is NULL, then the attribute value is stored only in the NdbRecAttr object returned by this method. This ...