anchor.diff:  
   (defmethod send-command-statement-close ((statement mysql-prepared-statement))
     (with-mysql-connection (c)
  +    (assert (eq c (mysql-prepared-statement-connection statement)))
       (mysql-command-init c +mysql-command-statement-close+)
       (let ((s (flexi-streams:make-in-memory-output-stream :element-type '(unsigned-byte 8))))
         (write-byte +mysql-command-statement-close+ s)
  
positive.code:                   ((vector (unsigned-byte 8)) data)
                    (string (babel:string-to-octets data)))))
      (with-mysql-connection (c)
        (mysql-command-init c +mysql-command-statement-send-long-data+)
        (let ((s (flexi-streams:make-in-memory-output-stream :element-type '(unsigned-byte 8))))
          (write-byte +mysql-command-statement-send-long-data+ s)
  
negative.code:                   (list 0 (length (mysql-prepared-statement-parameters statement)))
                    :test #'=))
    (with-mysql-connection (c)
      (assert (eq c (mysql-prepared-statement-connection statement)))
      (mysql-command-init c +mysql-command-statement-execute+)
      (let ((s (flexi-streams:make-in-memory-output-stream :element-type '(unsigned-byte 8))))
        (write-byte +mysql-command-statement-execute+ s)
  