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https://dev.mysql.com/doc/internals/en/implementing-savepoint-rollback-method.html
The savepoint_rollback() method is called whenever a user issues the ROLLBACK TO SAVEPOINT statement: int (*savepoint_rollback) (THD *thd, void *sv); The *sv parameter points to the storage area that was previously passed to the savepoint_set() ...
https://dev.mysql.com/doc/internals/en/implementing-savepoint-set-method.html
The savepoint_set() method is called whenever a user issues the SAVEPOINT statement: int (*savepoint_set)(THD *thd, void *sv); The *sv parameter points to an uninitialized storage area of the size defined by savepoint_offset. When savepoint_set() ...
https://dev.mysql.com/doc/internals/en/index.html
For help with using MySQL, please visit the MySQL Forums, where you can discuss your issues with other MySQL users.
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/privilege-checking.html
In complex scenarios where the query uses SQL SECURITY DEFINER views or stored routines, it may be that a user is denied from seeing the trace of its query because it lacks some extra privileges on those objects. In that case, the trace will be ...
https://dev.mysql.com/doc/internals/en/public-key-retrieval-example.html
set --default-auth=sha256_password for the MySQL client, don't provide it with the servers public-key and login with a user whose account uses sha256_password: 9f 00 00 01 85 a6 3f 00 00 00 00 01 21 00 00 00 ......?.....!... set ...
https://dev.mysql.com/doc/internals/en/secure-password-authentication.html
The password is calculated by: SHA1( password ) XOR SHA1( "20-bytes random data from server" <concat> SHA1( SHA1( password ) ) ) .
https://dev.mysql.com/doc/internals/en/source-directory-listing.html
Directory — Short Comment bdb — The Berkeley Database table handler BitKeeper — BitKeeper administration (not part of the source distribution) BUILD — Frequently used build scripts client — Client library cmd-line-utils — Command-line ...
https://dev.mysql.com/doc/internals/en/starting-transaction-from-external-lock-method.html
Also, if a user calls LOCK TABLES, MySQL will call handler::external_lock only once. MySQL calls [custom-engine.html#custom-engine-api-reference-external_lock handler::external_lock()] for every table it is going to use at the beginning of every ...
https://dev.mysql.com/doc/internals/en/test-faults-usage.html
SET SESSION debug="+d,function_crash_return"; will crash the server while returning from function.