Question

select * from TableName

FROM THIS:

ID     Col1    Col2    Col3   Col4    Col5
1       aa      21      ss     m        p
2       aa      21      tt     f        u
3       bb      21      ss     f        d
4       bb      22      ss     m        d 

TO THIS

ID     Col1    Col2    Col3   Col4    Col5
1       aa      21      ss     m        p
2                       tt     f        u
3       bb              ss              d
4               22             m        

i want this Output is it possible ?

don’t want repeat duplicate value if it next to the same

Thanks for your time.

Answer 1

You can select everything you want to temporary table, clear repeated values and return result set from updated temporary table.

Query might look like this:

select 1 as id, 'aa' as col1, '21' as col2,'ss' as col3,'m' as col4,'p' as col5 into #tmp union
select 2, 'aa','21','tt','f','u' union
select 3, 'bb','21','ss','f','d' union
select 4, 'bb','22','ss','m','d' 


update t set
    col1 = case when tp.col1 = t.col1 then '' else t.col1 end,
    col2 = case when tp.col2 = t.col2 then '' else t.col2 end,
    col3 = case when tp.col3 = t.col3 then '' else t.col3 end,
    col4 = case when tp.col4 = t.col4 then '' else t.col4 end,
    col5 = case when tp.col5 = t.col5 then '' else t.col5 end
from #tmp t
left join (
    select t1.id, max(t2.id) as pid
    from #tmp t1
    join #tmp t2 on t1.id > t2.id
    group by t1.id
) p on t.id = p.id
left join #tmp tp on p.pid = tp.id

Result:

/*------------------------
select top 100 * from  #tmp
------------------------*/
id   col1    col2    col3    col4    col5
1    aa      21      ss      m       p
2                    tt      f       u
3    bb              ss              d
4            22              m    

SQL Fiddle