hiding rows depending on a situation

[elmahdi27]

hi i need help 

i wanna hide rows where theres no difference in speciic Fields (all of them ) as long as theres a difeerence in one of them the row should be in the table.

i have to do this using the field pseudonym becuase thats my dimension but icant get it done. 

theres also the idea of using a comparisonkey using the hash funktion.

if anybody has an idea i would be very grateful.