private RelationPlan planImplicitTable()
{
List<Expression> emptyRow = ImmutableList.of();
return new RelationPlan(
new ValuesNode(idAllocator.getNextId(), ImmutableList.<Symbol>of(), ImmutableList.of(emptyRow)),
new TupleDescriptor(),
ImmutableList.<Symbol>of(),
Optional.<Symbol>absent());
}