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https://dev.mysql.com/doc/ndbapi/en/mccj-clusterj-_query.html
A Query instance represents a specific query with bound parameters. Table 4.37 deletePersistentAll() Parameter Description return the number of instances deleted 4.3.1.19.9 execute(Map<String, ?>) public abstract Results<E> execute(Map<String, ?> ...
https://dev.mysql.com/doc/ndbapi/en/overview-ndb-classes.html
The NDB API is an NDB Cluster application interface that implements transactions. It consists of the following fundamental classes: Ndb_cluster_connection represents a connection to a cluster. Ndb is the main class, and represents a connection to a ...
https://dev.mysql.com/doc/internals/en/parsing-key-information.html
Many of the index methods pass a byte array named *key that identifies the index entry to be read in a standard format. Your storage engine will need to extract the information stored in the key and translate it into its internal index format to ...
https://dev.mysql.com/doc/internals/en/optimizer-or-relations.html
An ORed search has the form condition1 OR condition2, as in this example: WHERE column1 = 'x' OR column2 = 'y' Here the optimizer's decision is to use a sequential scan. There is also an option to use index merge under such circumstances. See ...
https://dev.mysql.com/doc/internals/en/optimizer-early-nulls-filtering.html
Suppose we have a join order such as this one: ..., tblX, ..., tblY, ... Suppose further that table tblY is accessed via ref or eq_ref access on tblY.key_column = tblX.column or, in the case of ref access using multiple key parts, via ... Here the ...
https://dev.mysql.com/doc/ndbapi/en/ndb-start-compiler-options.html
In order to compile source files that use the NDB API, you must ensure that the necessary header files can be found. Header files specific to the NDB and MGM APIs are installed in the following subdirectories of the MySQL include directory, ...
https://dev.mysql.com/doc/internals/en/implementing-commit.html
During a commit operation, all changes made during a transaction are made permanent and a rollback operation is not possible after that. Depending on the transaction isolation used, this may be the first time such changes are visible to other ...
https://dev.mysql.com/doc/workbench/en/wb-admin-export-import-results.html
Export or Import data directly from or into the result set. The export and import operations shown in this section apply to result data only. For an overview of the various data export and import options in MySQL Workbench, see Section 6.5, “Data ...
https://dev.mysql.com/doc/internals/en/guided-tour-major-directories-test.html
To run a test named some.test with the debugger in embedded mode you could do this: Run libmysqld/examples/test_run --gdb some.test. This creates a libmysqld/examples/test-gdbinit file which contains the required parameters for mysqltest. Make a ...
https://dev.mysql.com/doc/connectors/en/connector-net-programming-binary-issues.html
There are certain situations where MySQL will return incorrect metadata about one or more columns. More specifically, the server can sometimes report that a column is binary when it is not (and the reverse). In these situations, it becomes ...