LTRIM

    This will trim off unwanted characters from the left end of string.

     Syntax: ltrim (string  [,unwanted_chars])

     Ex:

          SQL> select ltrim('computer','co'), ltrim('computer','com') from dual;

LTRIM(  LTRIM

--------  ---------

mputer   puter

SQL> select ltrim('computer','puter'), ltrim('computer','omputer') from dual;

LTRIM('C  LTRIM('C

----------   ----------

computer   computer

          

           -- If you haven’t specify any unwanted characters it will display entire string.