pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
c,u,c-u,-79,0.6427496480093358,0.18172902651343215,$null
a,u,a-u,-68,,0.2650566289400591,$null
b,u,b-u,-10,0.7801162418714427,,$null