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https://dev.mysql.com/doc/internals/en/optimizer-definitions.html
MySQL changes these routines frequently, so you should compare what is said here with what's in the current source code. This description uses a narrow definition: The optimizer is the set of routines which decide what execution path the DBMS ...
https://dev.mysql.com/doc/internals/en/overview.html
The MySQL protocol is used between MySQL Clients and a MySQL Server.
https://dev.mysql.com/doc/internals/en/replication-correct.html
(rpl-type-promotion) The data type of a column differs as allowed in Replication with Differing Table Definitions on Source and Replica. In addition to what we guarantee in (P-rpl-correct), we also guarantee correct replication in the following ...
https://dev.mysql.com/doc/internals/en/replication-organization.html
In the next section, we list the source code files used by replication and describe what each file contains. We distinguish between two levels of the architecture: principles, and rules: principle High-level goal that declares how the program shall ...
https://dev.mysql.com/doc/internals/en/sql-directory.html
Programs for handling SQL commands. The "core" of MySQL. These are the .c and .cc files in the sql directory: derror.cc --- read language-dependent message file des_key_file.cc --- load DES keys from plaintext file discover.cc --- Functions for ...
https://dev.mysql.com/doc/internals/en/wait-condition.html
Like 'sleep', this method can also be used, when all but one thread reach a blocked state. If you are able to detect that the threads are in their blocked state by using SQL statements, then you can use this method. The remaining thread runs the ...
https://dev.mysql.com/doc/internals/en/writing-platform-checks.html
If you modify MySQL source and want to add a new platform check, please read http://www.vtk.org/Wiki/CMake_HowToDoPlatformChecks first. In MySQL, most of the platform tests are implemented in configure.cmake and the template header file, ...
https://dev.mysql.com/doc/internals/en/writing-services-for-use-from-plugins.html
For complete instructions on writing a service, see the HOWTO file in the libservices directory within a MySQL source distribution. Services are implemented by modifying server code in the sql directory to register the service in the plugin code, ...
https://dev.mysql.com/doc/internals/en/x-protocol.html
Figure 15.1 X Protocol Overview The documentation is based on the source files such as: sql/sql_parse.cc for the protocol basics mysqlx.proto mysqlx_connection.proto mysqlx_session.proto mysqlx_crud.proto mysqlx_sql.proto mysqlx_resultset.proto ...