​

​

对于简单的评论：

set serveroutput on format wrapped;
begin
    DBMS_OUTPUT.put_line('simple comment');
-- do something
begin
    DBMS_OUTPUT.put_line('second simple comment');
/

你应该得到：

anonymous block completed
simple comment
anonymous block completed
second simple comment

如果你想打印出变量的结果，下面是另一个例子：

set serveroutput on format wrapped;
declare
a_comment VARCHAR2(200) :='first comment';
begin
    DBMS_OUTPUT.put_line(a_comment);
-- do something
declare
a_comment VARCHAR2(200) :='comment';
begin
    DBMS_OUTPUT.put_line(a_comment || 2);
end;

您的输出应为：

anonymous block completed