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https://dev.mysql.com/doc/internals/en/guided-tour-oddsends.html
Source Code Administration Directories: SCCS Common .h Files: include GNU Readline library and related: cmd-line-utils Stand-alone Utility & Test Programs: extra mysql-test repl-tests support-files tests tools You don't have to worry about the ...
https://dev.mysql.com/doc/internals/en/heap-directory.html
All the MySQL table handlers (that is, the handlers that MySQL itself produces) have files with similar names and functions. Thus, this (heap) directory contains a lot of duplication of the myisam directory (for the MyISAM table handler). Such ...
https://dev.mysql.com/doc/internals/en/implementing-rnd-init-method.html
The following example is from the CSV storage engine: int ha_tina::rnd_init(bool scan) { DBUG_ENTER("ha_tina::rnd_init"); current_position= next_position= 0; records= 0; chain_ptr= chain; DBUG_RETURN(0); } If the scan parameter is true, the MySQL ...
https://dev.mysql.com/doc/internals/en/implementing-rnd-next-method.html
After the table is initialized, the MySQL server will call the handler's [custom-engine.html#custom-engine-api-reference-rnd_next rnd_next()] method once for every row to be scanned until the server's search condition is satisfied or an end of file ...The rnd_next() method takes a single byte array parameter named ...
https://dev.mysql.com/doc/internals/en/innodb-field-contents.html
The Field Contents part of the record has all the data. There are no markers between fields, and there is no marker or filler at the end of a record. I made a table with this definition: CREATE TABLE T (FIELD1 VARCHAR(3), FIELD2 VARCHAR(3), FIELD3 ...
https://dev.mysql.com/doc/internals/en/innodb-record-structure.html
This page contains: A high-altitude "summary" picture of the parts of a MySQL/InnoDB record structure. After reading this page, you will know how MySQL/InnoDB stores a physical record.
https://dev.mysql.com/doc/internals/en/integer.html
The MySQL Protocol has a set of possible encodings for integers: Fixed-length integers Length-encoded integers 14.1.1.1.1 Fixed-Length Integer Types Protocol::FixedLengthInteger A fixed-length integer stores its value in a series of bytes with the ...If the value is ≥ 251 and < (216), it is stored as fc + 2-byte ...
https://dev.mysql.com/doc/internals/en/libmysqld-directory.html
The product of libmysqld is not a client/server affair, but a library. The program files on this directory are: libmysqld.c --- The called side, compare the mysqld.exe source lib_sql.c --- Emulate the vio directory's communication buffer .
https://dev.mysql.com/doc/internals/en/miscellaneous-options.html
For Autotools MySQL build options that have CMake equivalents, the normal mapping from an Autotools option to the CMake option is to convert uppercase, remove leading dashes, replace dashes with underscores, and add a leading -D.
https://dev.mysql.com/doc/internals/en/optimizer-not-relations.html
It is a logical rule that column1 <> 5 is the same as column1 < 5 OR column1 > 5 However, MySQL does not transform in this circumstance. It is also a logical rule that WHERE NOT (column1 != 5) is the same as WHERE column1 = 5 However, MySQL does ...