title: Difference between varchar2(10), varchar2(10 byte) and varchar2(10 char)
body: <p>I have been told by client to replace <code>varchar2(10 char)</code> by <code>varchar2(10 byte)</code>. I exactly don't know the difference in <code>varchar2(10),varchar2(10 char)</code> and <code>varchar2(10 byte)</code>. also could you please tell me in which scenario we should use.</p>