echo
----
db0.Put(ctx, tk(1), sv(1)) // @0.000000001,0 <nil>
db0.DelRangeUsingTombstone(ctx, tk(1), tk(2) /* @s2 */) // @0.000000002,0 <nil>
db0.Scan(ctx, tk(1), tk(2), 0) // @0.000000003,0 <nil>
/Table/100/"0000000000000001"/0.000000001,0 @ s1 v1
/Table/100/"000000000000000{1"-2"}/0.000000002,0 @ s2 <nil>
