select chr(92)||chr(102) from dual; \f
select chr(92)||chr(110) from dual; \n
select chr(92)||chr(114) from dual; \r
select chr(92)||chr(116) from dual; \t
select chr(92)||chr(118) from dual; \v
\b 退格符(Backspace) 0x08
\f 换页符(Form Feed) 0x0c
\n 换行符(Line Feed) 0x0a
\r 回车符(Carriage Return) 0x0d
\t 水平制表符(Horizontal Tab) 0x09
\v 垂直制表符(Vertical Tab) 0x0b
char(13) 回车
char(10) 换行