github.com/benhoyt/goawk@v1.8.1/testdata/t.in1 (about)

     1  	{ if (amount[$2] == "")
     2  		name[++n] = $2
     3  	  amount[$2] += $1
     4  	}
     5  END	{ for (i in name)
     6  		print i, name[i], amount[name[i]] | "sort"
     7  	}