pk1,pk2,content,sortable,sortable_with_nulls,sortable_with_nulls_2,text
c,x,c-x,99,,,$null
e,x,e-x,18,0.459570499176731,0.009397431454871041,$null
g,x,g-x,65,0.8552933714560903,0.3844824765824649,$null