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https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-operations-per-fragment.html
The operations_per_fragment table provides information about the operations performed on individual fragments and fragment replicas, as well as about some of the results from these operations. This currently has the following formats: Base table: ...
https://dev.mysql.com/doc/ndbapi/en/mccj-using-clusterj-annotations.html
In ClusterJ (as in JPA), annotations are used to describe how the interface is mapped to tables in a database. The annotation @PersistenceCapable(table="employee") is used to let ClusterJ know which database table to map the Employee to (in this ...
https://dev.mysql.com/doc/connector-python/en/connector-python-cext.html
Connector/Python supports a C extension that interfaces with the MySQL C client library. For queries that return large result sets, using the C Extension can improve performance compared to a “pure Python” implementation of the MySQL ...
https://dev.mysql.com/doc/internals/en/good-tests.html
There are a lot of strict rules and rules of thumb which may increase the quality of tests written for the tool pair mysqltest/mysqltest-run.pl (MTR). See the Writing Test Cases section of the MySQL Server Doxygen documentation, available at ...
https://dev.mysql.com/doc/internals/en/vc-plus-plus-files-directory.html
VC++Files includes a complete environment to compile MySQL with the VC++ compiler. To use it, just copy the files on this directory; the make_win_src_distribution.sh script uses these files to create a Windows source installation. This directory has ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-basic-read.html
This example illustrates basic retrieval of one or more rows from an NDB table using the NdbRecord interface and an NdbScanOperation. We assume that you have already created and populated the basic table, perhaps using the row insertion example ...
https://dev.mysql.com/doc/refman/8.4/en/date-calculations.html
MySQL provides several functions that you can use to perform calculations on dates, for example, to calculate ages or extract parts of dates. To determine how many years old each of your pets is, use the TIMESTAMPDIFF() function. Its arguments are ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-single-primary-mode.html
In single-primary mode (group_replication_single_primary_mode=ON) the group has a single primary server that is set to read/write mode. All the other members in the group are set to read-only mode (with super_read_only=ON). All other servers that ...
https://dev.mysql.com/doc/workbench/en/wb-toolbar.html
The MySQL Workbench toolbar is located immediately below the menu bar. Click the tools in the toolbar to perform the following actions: The new document icon: Creates a new document The folder icon: Opens a MySQL Workbench file (.mwb extension) The ...
https://dev.mysql.com/doc/internals/en/optimizer-and-relations.html
An ANDed search has the form condition1 AND condition2, as in this example: WHERE column1 = 'x' AND column2 = 'y' Here, the optimizer's decision process can be described as follows: If (neither condition is indexed) use sequential scan. Otherwise, ...