datafusion-sql 40.0.0

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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.

mod ast;
mod expr;
mod plan;
mod rewrite;
mod utils;

pub use expr::expr_to_sql;
pub use plan::plan_to_sql;

use self::dialect::{DefaultDialect, Dialect};
pub mod dialect;

pub struct Unparser<'a> {
    dialect: &'a dyn Dialect,
}

impl<'a> Unparser<'a> {
    pub fn new(dialect: &'a dyn Dialect) -> Self {
        Self { dialect }
    }
}

impl<'a> Default for Unparser<'a> {
    fn default() -> Self {
        Self {
            dialect: &DefaultDialect {},
        }
    }
}