risingwave_frontend/planner/
delete.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 fixedbitset::FixedBitSet;
16
17use super::Planner;
18use crate::binder::BoundDelete;
19use crate::error::Result;
20use crate::optimizer::plan_node::{LogicalDelete, LogicalProject, generic};
21use crate::optimizer::property::{Order, RequiredDist};
22use crate::optimizer::{PlanRef, PlanRoot};
23
24impl Planner {
25    pub(super) fn plan_delete(&mut self, delete: BoundDelete) -> Result<PlanRoot> {
26        let scan = self.plan_base_table(&delete.table)?;
27        let input = if let Some(expr) = delete.selection {
28            self.plan_where(scan, expr)?
29        } else {
30            scan
31        };
32        let input = if delete.table.table_catalog.has_generated_column()
33            || delete.table.table_catalog.has_rw_timestamp_column()
34        {
35            LogicalProject::with_out_col_idx(
36                input,
37                delete
38                    .table
39                    .table_catalog
40                    .columns()
41                    .iter()
42                    .enumerate()
43                    .filter_map(|(i, c)| (c.can_dml()).then_some(i)),
44            )
45            .into()
46        } else {
47            input
48        };
49        let returning = !delete.returning_list.is_empty();
50        let mut plan: PlanRef = LogicalDelete::from(generic::Delete::new(
51            input,
52            delete.table_name.clone(),
53            delete.table_id,
54            delete.table_version_id,
55            returning,
56        ))
57        .into();
58
59        if returning {
60            plan = LogicalProject::create(plan, delete.returning_list);
61        }
62
63        // For delete, frontend will only schedule one task so do not need this to be single.
64        let dist = RequiredDist::Any;
65        let mut out_fields = FixedBitSet::with_capacity(plan.schema().len());
66        out_fields.insert_range(..);
67        let out_names = if returning {
68            delete.returning_schema.expect("If returning list is not empty, should provide returning schema in BoundDelete.").names()
69        } else {
70            plan.schema().names()
71        };
72
73        let root = PlanRoot::new_with_logical_plan(plan, dist, Order::any(), out_fields, out_names);
74        Ok(root)
75    }
76}
risingwave_frontend/planner/delete.rs

risingwave_frontend/planner/
delete.rs
