17.8. Operator perform the prepared statement

  <execute statement> :: =
    EXECUTE <SQL statement name>
  (<result using clause>]
  (<parameter using clause>]
 <result using clause> :: = <using clause>
 <parameter using clause> :: = <using clause> 

Comment:

The EXECUTE statement can be applied to any previously prepared SQL statement, except for <dynamic select statement>. If it is a <dynamic single row select statement> statement, then the EXECUTE statement must contain a <result using class> section with the INTO keyword. In any case, the number of actual parameters specified through using sections must match the number of formal parameters defined in the prepared SQL statement.