datafusion_optimizer/
lib.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
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14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18#![doc(
19    html_logo_url = "https://raw.githubusercontent.com/apache/datafusion/19fe44cf2f30cbdd63d4a4f52c74055163c6cc38/docs/logos/standalone_logo/logo_original.svg",
20    html_favicon_url = "https://raw.githubusercontent.com/apache/datafusion/19fe44cf2f30cbdd63d4a4f52c74055163c6cc38/docs/logos/standalone_logo/logo_original.svg"
21)]
22#![cfg_attr(docsrs, feature(doc_auto_cfg))]
23// Make sure fast / cheap clones on Arc are explicit:
24// https://github.com/apache/datafusion/issues/11143
25#![deny(clippy::clone_on_ref_ptr)]
26
27//! # DataFusion Optimizer
28//!
29//! Contains rules for rewriting [`LogicalPlan`]s
30//!
31//! 1. [`Analyzer`] applies [`AnalyzerRule`]s to transform `LogicalPlan`s
32//!    to make the plan valid prior to the rest of the DataFusion optimization
33//!    process (for example, [`TypeCoercion`]).
34//!
35//! 2. [`Optimizer`] applies [`OptimizerRule`]s to transform `LogicalPlan`s
36//!    into equivalent, but more efficient plans.
37//!
38//! [`LogicalPlan`]: datafusion_expr::LogicalPlan
39//! [`TypeCoercion`]: analyzer::type_coercion::TypeCoercion
40pub mod analyzer;
41pub mod common_subexpr_eliminate;
42pub mod decorrelate;
43pub mod decorrelate_predicate_subquery;
44pub mod eliminate_cross_join;
45pub mod eliminate_duplicated_expr;
46pub mod eliminate_filter;
47pub mod eliminate_group_by_constant;
48pub mod eliminate_join;
49pub mod eliminate_limit;
50pub mod eliminate_nested_union;
51pub mod eliminate_one_union;
52pub mod eliminate_outer_join;
53pub mod extract_equijoin_predicate;
54pub mod filter_null_join_keys;
55pub mod optimize_projections;
56pub mod optimizer;
57pub mod propagate_empty_relation;
58pub mod push_down_filter;
59pub mod push_down_limit;
60pub mod replace_distinct_aggregate;
61pub mod scalar_subquery_to_join;
62pub mod simplify_expressions;
63pub mod single_distinct_to_groupby;
64pub mod utils;
65
66#[cfg(test)]
67pub mod test;
68
69pub use analyzer::{Analyzer, AnalyzerRule};
70pub use optimizer::{
71    ApplyOrder, Optimizer, OptimizerConfig, OptimizerContext, OptimizerRule,
72};
73
74pub(crate) mod join_key_set;
75mod plan_signature;
76
77#[cfg(test)]
78#[ctor::ctor]
79fn init() {
80    // Enable RUST_LOG logging configuration for test
81    let _ = env_logger::try_init();
82}
datafusion_optimizer/lib.rs

datafusion_optimizer/
lib.rs
