PostgreSQL Removing duplicates

Question

I am working on postgres query to remove duplicates from a table. The following table is dynamically generated and I want to write a select query which will remove the recor

Answer 1

So basically I did this

 create temp t1 as 
 select first, min (second) as second
 from df1 
 group by first

 select * from df1 
 inner join t1 on t1.first = df1.first and t1.second = df1.second

Its a satisfactory answer. Thanks for your help @Hack-R