swap id | sql scenario based interview questions and answers |

[@torrentdownloada]

Hello, i think you might have missed this scenario, what if the id's are some random integers or some strings. Please review my solution and let me know if my understanding is correct. Thanks with cte as (select *,row_number() over() rn from swap_id) select name,id,case when a%2=0 then lag(id) over() when a%20 then coalesce(lead(id) over(),id) else id end swapped from cte

[@Aman-lv2ee]

select name, case when id%2 =0 then lag(id,1,id)over(order by id) when id%2 !=0 then lead(id,1,id)over(order by id) end as swap_ids from swap_id;