unix - Remove all lines from file with duplicate value in field, including the first occurrence -

i remove lines in data file contain value in column 2 repeated in column 2 in other lines.

i've sorted value in column 2, can't figure out how use uniq values in 1 field values not of same length.

alternately, can remove lines duplicate using awk one-liner

awk -f"[,]" '!_[$2]++'

but retains line first incidence of repeated value in col 2.

as example, if data is

a,b,c c,b,a d,e,f h,i,j j,b,h

i remove lines (including first) b occurs in second column. this:

d,e,f h,i,j

thanks advice!!

if order not important following should work:

awk -f, ' !seen[$2]++ {     line[$2] = $0 } end {      for(val in seen)         if(seen[val]==1)            print line[val] }' file

output

h,i,j d,e,f

And