Identify if at least one row with given condition exists

Question

Employee table has ID and NAME columns. Names can be repeated. I want to find out if there is at least one row with name like \'kaushik%\'.

So query should return true/f

Answer 1

How about:

select max(case when name like 'kraushik%' then 1 else 0 end)
from employee

Or, what might be more efficient since like can use indexes:

select count(x)
from (select 1 as x
      from employee
      where name like 'kraushik%'
     ) t
where rownum = 1