// 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.pub},

//! A "prelude" for users of the datafusion crate.
//!
//! Like the standard library's prelude, this module simplifies importing of
//! common items. Unlike the standard prelude, the contents of this module must
//! be imported manually:
//!
//! ```
//! use datafusion::prelude::*;
//! ```

pub use crate::dataframe::DataFrame;
pub use crate::execution::context::{SessionConfig, SessionContext};
pub use crate::execution::options::{
    AvroReadOptions, CsvReadOptions, NdJsonReadOptions, ParquetReadOptions,
};

pub use datafusion_common::Column;
pub use datafusion_expr::{
    expr_fn::*,
    lit, lit_timestamp_nano,
    logical_plan::{JoinType, Partitioning},
    Expr,
};
