PL/SQL声明变量，输出变量值

DECLARE
  v_syscd char(3);
  v_sysnm varchar2(30);
BEGIN
  SELECT syscd, sysnm
    INTO v_syscd, v_sysnm
    FROM sysmta
   WHERE syscd = '001';
  dbms_output.put_line('syscd=' || v_syscd || ', sysnm=' || v_sysnm);
END;

 输出结果：syscd=001, sysnm=姅幃夛幮嶰榓