MySQL 9.2.0
Source Code Documentation
All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Modules Pages Concepts
Prepared Statements

The prepared statement protocol was introduced in MySQL 4.1 and adds a few new commands:

It also defines a more compact resultset format that is used instead of Text Resultset to return the results.

Note
Keep in mind that not all SQL statements can be prepared.
See also
WL#2871