How to remove duplicates from table using SQL query

Question

I have a table which is as follows:

emp_name   emp_address  sex  matial_status  
uuuu       eee          m    s
iiii       iii          f    s
uuuu       eee         


        

Answer 1

one way

select emp_name,   emp_address,  sex,  max(marital_status) as marital_status
from Yourtable
group by emp_name,   emp_address,  sex

Since I don't know what you want, I used max for the marital status

See also Including an Aggregated Column's Related Values for more examples