public RelNode toRel(RelOptTable.ToRelContext context, RelOptTable relOptTable) { final RelOptCluster cluster = context.getCluster(); final TableScan scan = LogicalTableScan.create(cluster, relOptTable); return DruidQuery.create(cluster, cluster.traitSetOf(BindableConvention.INSTANCE), relOptTable, this, ImmutableList.<RelNode>of(scan)); }