The table is not a problem as I wrote. Sorry for the confusion. Imagine these structure:
rowid, sku, f1, f101, f2, f102, f3, f103 and these rows:
#1, sku1, desc-1, desc-1, kg, t, fg, fg
#2, sku2, abcdef, acdef, kg, kg, fg, fg
So, in row 1 there's is a difference between values in f2 and f102. And in row 2 there is a difference between values in f1 and f101
I know I can show these in the straight table but have 60 (30*2) fields to show.