@EMREUYSAL
find starter help here:
DataTable_SetOperations.xaml (8.9 KB)
was done with the set operations Intersect And Except:
Another techniques is to do it with Any and denied Any in combination sequenceEqual
(have also a look here on the use of sequenceequal - [HowTo] - Find Duplicate / NonDuplicate rows - checking all columns - without explicit listing the colnames/index )
to safe it up it is recommended to do the empty result check similar as below
