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https://dev.mysql.com/doc/internals/en/mysql-services-for-plugins.html
As of MySQL 5.5, plugins have access to server “services.” The services interface exposes server functionality that plugins can call. It complements the plugin API and has these characteristics: Services enable plugins to access code inside the ...
https://dev.mysql.com/doc/internals/en/mysys-directory.html
There are 125 *.c programs in this directory: array.c --- Dynamic array handling charset.c --- Using dynamic character sets, set default character set, ... For example, the main functions in my_getwd.c are described thus: "int my_getwd _A((string ...
https://dev.mysql.com/doc/internals/en/open.html
Synopsis virtual int open ( name, mode, test_if_locked); const char * name ; int mode ; uint test_if_locked ; Description This is the open method. For instance when a request comes in for a select on the table (tables are not open and closed for ...
https://dev.mysql.com/doc/internals/en/predefined-option-sets.html
It might be handy to specify a predefined set of options and do some compiler flag adjustments by passing just a single option to cmake. Assuming that we want to include the embedded library and exclude the ARCHIVE storage engine from the build, ...
https://dev.mysql.com/doc/internals/en/prepared-stored-statement-preparation.html
As mentioned above, THD is currently a required argument and the runtime context for every function in the server. Therefore, in order to call the parser and allocate memory in the statement memory root we perform several save-restore steps with ...
https://dev.mysql.com/doc/internals/en/prepared-stored.html
Let us start with a general description of the MySQL statement processing workflow in order to provide the reader with understanding of the problem of reexecution and vocabulary for the following sections. Conventional statements, that is, SQL ...
https://dev.mysql.com/doc/internals/en/records-in-range.html
Purpose For the given range how many records are estimated to be in this range. Synopsis virtual ha_rows records_in_range ( inx, min_key, max_key); uint inx ; key_range * min_key ; key_range * max_key ; Description This is the records_in_range ...
https://dev.mysql.com/doc/internals/en/replication-correct.html
In addition to what we guarantee in (P-rpl-correct), we also guarantee correct replication in the following scenarios: (P-rpl-different-file-system-case-sensitivities) TODO: allowed differences in file system case sensitivity ...
https://dev.mysql.com/doc/internals/en/required-server-code-patches.html
Currently procedures can only be compiled into the server staticly. There is no dynamic procedure for loading them dynamicly yet like we have for UDFs and plugins. The build system is not too clever about creating these symlinks for files added ...
https://dev.mysql.com/doc/internals/en/select-subquery.html
In expressions, subqueries (that is, subselects) are represented by Item inherited from Item_subselect. To hide difference in performing single SELECTs and UNIONs, Item_subselect uses two different engines, which provide uniform interface for ...