risingwave_frontend/optimizer/plan_node/generic/
intersect.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use pretty_xmlish::{Pretty, StrAssocArr};
16use risingwave_common::catalog::Schema;
17
18use super::{GenericPlanNode, GenericPlanRef, impl_distill_unit_from_fields};
19use crate::optimizer::optimizer_context::OptimizerContextRef;
20use crate::optimizer::property::FunctionalDependencySet;
21
22/// `Intersect` returns the intersect of the rows of its inputs.
23/// If `all` is false, it needs to eliminate duplicates.
24#[derive(Debug, Clone, PartialEq, Eq, Hash)]
25pub struct Intersect<PlanRef> {
26    pub all: bool,
27    pub inputs: Vec<PlanRef>,
28}
29
30impl<PlanRef: GenericPlanRef> GenericPlanNode for Intersect<PlanRef> {
31    fn schema(&self) -> Schema {
32        self.inputs[0].schema().clone()
33    }
34
35    fn stream_key(&self) -> Option<Vec<usize>> {
36        Some(self.inputs[0].stream_key()?.to_vec())
37    }
38
39    fn ctx(&self) -> OptimizerContextRef {
40        self.inputs[0].ctx()
41    }
42
43    fn functional_dependency(&self) -> FunctionalDependencySet {
44        FunctionalDependencySet::new(self.inputs[0].schema().len())
45    }
46}
47
48impl<PlanRef: GenericPlanRef> Intersect<PlanRef> {
49    pub fn fields_pretty<'a>(&self) -> StrAssocArr<'a> {
50        vec![("all", Pretty::debug(&self.all))]
51    }
52}
53impl_distill_unit_from_fields!(Intersect, GenericPlanRef);
risingwave_frontend/optimizer/plan_node/generic/intersect.rs

risingwave_frontend/optimizer/plan_node/generic/
intersect.rs
