How to count consecutive duplicates in a table?

Question

I have below question:
Want to find the consecutive duplicates

SLNO   NAME     PG   
1       A1      NO                   
2       A2      YES                    


        

Answer 1

Try to use row_number()

select
    SLNO,
    Name,
    PG,
    row_number() over (partition by PG order by PG) as 'Consecutive'
from
    
order by
    SLNO,
    NAME,
    PG
This is should work with minor tweaking.
--EDIT--
Sorry, partiton by PG.
The partitioning tells the row_number when to start a new sequence.

                                                        

              
                
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