Regular expression removing a line from multiline text

Question

I have a regular expression

select regexp_replace('123@gmail.com - work new address',
                      [A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}, '')
  from dual;

which i'm using to match email addresses. Some strings are stored as multilines

I want to match the email address on the 1st line and remove all text inlcuding - work, but NOT the second line after the carriage return.

Answer 1

First you must replace carriage return with a caracter like #. For example :

REPLACE(yourstring,CHR(10),'#')

After with result string like "123@gmail.com - work#new@address" you can execute this :

select regexp_substr(regexp_substr('123@gmail.com -     work#new@address',
'[^#]+', 1, level),'[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+.[A-Za-z]  {2,4}') 
from dual
connect by regexp_substr('123@gmail.com - work#new@address', 
                         '[^#]+',1,   level) is not null;


REGEXP_SUBSTR(REGEXP_SUBSTR('123
--------------------------------
123@gmail.com
new@address