I want Only one record instead of multiple times  if the value is same

Hi manoj,

i"m taking data from tableau server. it has huge data. i'm explaining  my question clearly i want only single record instead of multiple if the data is same.if the data changes then i want that time interval as well that is max interval of changed record.i'm attaching the below screen shot.From the below screen shot i want only 10:30 record instead of same power factor measure for each interval and 11:00 clock again it changed to 0.01 .if it continuous same for 2:00 o clock i need 2:00 clock interval along with  power factor value. eliminate rest of the intervals.