Combine two separate sql queries into single query

Question

I have two sql queries

SELECT sub_id, 
       sub_sent_code, 
       date_time 
FROM   moviedatabase.reg_sub_master 
WHERE  (date_time >= '2013-01-19' 
         AND date_time <= '2013-01-29');

and

SELECT sub_id, 
       sub_sent_code, 
       date_time 
FROM   moviedatabase.reg_sub_master 
WHERE  date_time <= '2013-01-19'; 

My requirment is from 1st query what ever the result comes that sub_id,sub_sent_code,date_time should not be present in 2nd query .

I want to make it single query.

EDIT : actually i want the result where date_time >='2013-01-19' AND date_time <='2013-01-29' and the sub_id which i am getting should not the be there before '2013-01-19'

Answer 1

Try :

SELECT sub_id,sub_sent_code,date_time
FROM   moviedatabase.reg_sub_master
WHERE  (date_time >='2013-01-19' 
    AND date_time <='2013-01-29')
    AND sub_id NOT IN (
        SELECT DISTINCT sub_id
        FROM   moviedatabase.reg_sub_master
        WHERE  date_time <='2013-01-19;