Oracle PL/SQL Interview questions


14. Oracle Functions - Replace versus Trim

SQL> select replace('jose. antony@ yahoo.com',' ', null) as Replace1 from dual;

REPLACE1
--------------------
jose.antony@yahoo.com         --Removes all spaces from in-between

SQL> select trim('jose. antony@ yahoo.com') as Trim1 from dual;


TRIM1
----------------------
jose. antony@ yahoo.com         --Removes spaces from both sides only.