How to do Left join in r [duplicate]

I have two dataset one and two

dataset one

a     b  c
111   a  1
112   b  2 
113   c  3
114   d  4
115   e  5

dataset two

e    d   g
222  ss  11
111  ff  22
113  ww  33 
114  qq  44
234  dd  55
534  vv  66

I want to do a left join

Below is the code written in SQL but when i try it in SQLDF it showing as error

proc sql;
create table join1 as
select one.*, two.*
from  one left join two
on one.a = two.e;
quit;