I want to update all the rows after the first row for each Team

Question

I want to update all the rows after the first row for each Team.

TableName: Test

ID , Team , StartTime, EndTime, TotalTime
1.......          


        

Answer 1

You can use a CTE with row_number():

with toupdate as (
      select t.*, row_number() over (partition by team order by id) as seqnum
      from test
     )
update toupdate
    set StartDate = DateAdd(SECOND, - ProjectedTime * 60, EndDate)
    where seqnum > 1;