Specifies the SQL statement to be prepared and executed
    dynamically. You either specify the statement string directly
    in a character string literal enclosed in single quotation marks,
    or in a parameter that contains the statement string.

    Whether specified directly or by a parameter, the statement
    string must be a character string that is a dynamically
    executable SQL statement The form for the statement is the same
    as in embedded SQL, except that you do not need to begin the
    string with EXEC SQL.