Description
  
   EXECUTE is used to execute a previously prepared
   query. Since prepared queries only exist for the duration of a
   session, the prepared query must have been created by a
   PREPARE statement executed earlier in the
   current session.
  
   If the PREPARE statement that created the query
   specified some parameters, a compatible set of parameters must be
   passed to the EXECUTE statement, or else an
   error is raised. Note that (unlike functions) prepared queries are
   not overloaded based on the type or number of their parameters: the
   name of a prepared query must be unique within a database session.
  
   For more information on the creation and usage of prepared queries,
   see PREPARE.