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// 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.

//! This module provides:
//!
//! 1. A SQL parser, [`DFParser`], that translates SQL query text into
//! an abstract syntax tree (AST), [`Statement`].
//!
//! 2. A SQL query planner [`SqlToRel`] that creates [`LogicalPlan`]s
//! from [`Statement`]s.
//!
//! [`DFParser`]: parser::DFParser
//! [`Statement`]: parser::Statement
//! [`SqlToRel`]: planner::SqlToRel
//! [`LogicalPlan`]: datafusion_expr::logical_plan::LogicalPlan

mod expr;
pub mod parser;
pub mod planner;
mod query;
mod relation;
mod select;
mod set_expr;
mod statement;
pub mod utils;
mod values;

pub use datafusion_common::{ResolvedTableReference, TableReference};
pub use expr::arrow_cast::parse_data_type;
pub use sqlparser;