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// Copyright 2021 Datafuse Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::fmt::Display;
use std::fmt::Formatter;
use derive_visitor::Drive;
use derive_visitor::DriveMut;
use crate::ast::Expr;
use crate::ast::Hint;
use crate::ast::TableReference;
use crate::ast::With;
#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub struct DeleteStmt {
pub hints: Option<Hint>,
pub table: TableReference,
pub selection: Option<Expr>,
// With clause, common table expression
pub with: Option<With>,
}
impl Display for DeleteStmt {
fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
if let Some(cte) = &self.with {
write!(f, "WITH {} ", cte)?;
}
write!(f, "DELETE ")?;
if let Some(hints) = &self.hints {
write!(f, "{} ", hints)?;
}
write!(f, "FROM {}", self.table)?;
if let Some(conditions) = &self.selection {
write!(f, " WHERE {conditions}")?;
}
Ok(())
}
}