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https://dev.mysql.com/doc/internals/en/command-phase.html
In the command phase, the client sends a command packet with the sequence-id [00]: 13 00 00 00 03 53 ...
https://dev.mysql.com/doc/internals/en/cowork-with-dbug-facility.html
The following shell commands proved very useful in extracting relevant information: egrep 'query:|debug_sync_exec:' mysql-test/var/log/mysqld.1.trace It shows all executed SQL statements and all actions executed by synchronization points. When ...
https://dev.mysql.com/doc/internals/en/creating-handlerton.html
Possible values are defined in sql/handler.h and copied here: #define HTON_NO_FLAGS 0 #define HTON_CLOSE_CURSORS_AT_COMMIT (1 << 0) #define HTON_ALTER_NOT_SUPPORTED (1 << 1) #define HTON_CAN_RECREATE (1 << 2) #define HTON_FLUSH_AFTER_RENAME (1 << 3) ... The handlerton (short for handler singleton) defines the storage engine and contains method pointers to those methods that apply to the storage engine as a whole, as opposed to methods that work on a per-table ...
https://dev.mysql.com/doc/internals/en/creating-tables.html
The *info parameter is a structure containing information on the CREATE TABLE statement used to create the table. Once a handler is instanced, the first operation that will likely be required is the creation of a table. Your storage engine must ...
https://dev.mysql.com/doc/internals/en/dbug-sleep.html
It says that the next statement can either succeed (0) or fail (ER_UNKNOWN_SYSTEM_VARIABLE). In cases where the normal server code does not have a block point at the critical place, one can insert an artificial synchronization point.
https://dev.mysql.com/doc/internals/en/debug-sync-facility.html
MySQL supports a Debug Sync Facility, which - in spite of the "debug" in its name - is completely independent from the DBUG facility (except that it uses DBUG to trace its operation, if DBUG is also configured in the server). The documentation here ...
https://dev.mysql.com/doc/internals/en/debug-sync-implementation.html
The SET DEBUG_SYNC statement adds a requested action to the array or overwrites an existing action for the same synchronization point. Pseudo code for a synchronization point: #define DEBUG_SYNC(thd, sync_point_name) if ...
https://dev.mysql.com/doc/internals/en/error-messages-storage-engine.html
To add error messages for table handlers, the following example may be helpful. Purpose: Implement the handler::get_error_message function as ha_federated::get_error_message to return the handler-specific error message. When you have returned the ...
https://dev.mysql.com/doc/internals/en/floating-point-types.html
This document was created when http://bugs.mysql.com/4457 (Different results in SQL-Statements for the same record) was fixed at the end of August 2004. The MySQL Reference Manual has a discussion of floating-point numbers in Section 11.2 Numeric ...
https://dev.mysql.com/doc/internals/en/formal-stuff.html
Section 26.1.1, “Coding Style” Section 26.1.2, “SQL Statement Example” Section 26.1.4, “Header of Scripts” .