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https://dev.mysql.com/doc/internals/en/guided-tour-chunk.html
Abbreviations are common, for example thd stands for thread, you just have to get used to them. Now, having finished with our bird's eye view of the source code from the air, let's take the perspective of the worms on the ground (which is another ...
https://dev.mysql.com/doc/internals/en/guided-tour-majordir-sql.html
But here in the sql directory, we have programs which are responsible for determining which handler to call, formatting appropriate arguments, and checking results. If you remember your manual, you know that you must pronounce this: ess queue ell.
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. Such duplicates have been marked with an "*" in the following list. Thus, this (heap) directory contains a lot of ...
https://dev.mysql.com/doc/internals/en/implementing-records-in-range-method.html
The [custom-engine.html#custom-engine-api-reference-records_in_range records_in_range()] method is called by the optimizer to assist in choosing which index on a table to use for a query or join. It is defined as follows: ha_rows ...
https://dev.mysql.com/doc/internals/en/innodb-fil-header.html
The fields FIL_PAGE_FILE_FLUSH_LSN, FIL_PAGE_PREV, and FIL_PAGE_NEXT all have to do with logs, so I'll refer you to my article “How Logs Work With MySQL And InnoDB” on devarticles.com. The word "space" is generic jargon for either "log" or ...
https://dev.mysql.com/doc/internals/en/innodb-fil-trailer.html
But if something goes really wrong, then it's nice to have a checksum, and to have a value at the very end of the page which must be the same as a value at the very beginning of the page. The Fil Trailer has one part, as follows: Name Size Remarks ...
https://dev.mysql.com/doc/internals/en/innodb-page-header.html
The PAGE_FREE pointer in the page header points to the first record in the list. The "next" pointer in the record header (specifically, in the record's Extra Bytes) points to the next record in the list. PAGE_DIRECTION and PAGE_N_DIRECTION: It's ...
https://dev.mysql.com/doc/internals/en/item-class.html
To us, the word Item means more than just “thingamabob”; it is a technical term with a precise definition in the context of our source code. In the function category we include operators such as + and ||, because operators are merely functions ...
https://dev.mysql.com/doc/internals/en/logging-transactions-rules-for-commmitting-statements.html
(R-log-commit-statement) All other statements that have a pre-commit are written directly to the binlog. However, due to requirements by NDB (which have not been clarified), we write directly to the binlog.) . (Note: this is semantically equivalent ...
https://dev.mysql.com/doc/internals/en/logging-transactions-rules-for-non-committing-statements.html
The preliminary rules above, together with the principles for logging format, have been used to construct the following rules. Let S be a logged statement that does not have an implicit commit, except CREATE TEMPORARY TABLE...SELECT (This includes ...CALL statements are unrolled (see ???TODO: add section about unrolling???), so that each statement executed by the stored procedure is logged ...