in database null values wont come in the output

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C#

My query as follows;

select Distinct Faculty_Name = (select top 1 facname from faculty f where facid = bfid and FacName = 'G. SEKHAR' and FacName <>'null'), Rating = (case rate when '1' then 'Excellent' when '2' then 'Good' when '3' then 'Fair' when '4' then 'Poor' when '0' then 'Not Applicable' end)  
  from facfeedback 

Output as follows;

Faculty_Name    Rating

 NULL	       Excellent
 NULL	       Fair 
 G. SEKHAR     Excellent
 G. SEKHAR     Fair

from my below i do not want the Null values in the below output.
for that in my above code how to write the code the null values wont be displayed in the output
But i want the output as follows;

Faculty_Name    Rating

  G. SEKHAR     Excellent
  G. SEKHAR     Fair 

For that how can i do?