datafusion 4.0.0

DataFusion is an in-memory query engine that uses Apache Arrow as the memory model
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

// 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 a logical query plan enum that can describe queries. Logical query
//! plans can be created from a SQL statement or built programmatically via the Table API.
//!
//! Logical query plans can then be optimized and executed directly, or translated into
//! physical query plans and executed.

mod builder;
mod dfschema;
mod display;
mod expr;
mod extension;
mod operators;
mod plan;
mod registry;
pub use builder::LogicalPlanBuilder;
pub use dfschema::{DFField, DFSchema, DFSchemaRef, ToDFSchema};
pub use display::display_schema;
pub use expr::{
    abs, acos, and, array, ascii, asin, atan, avg, binary_expr, bit_length, btrim, case,
    ceil, character_length, chr, col, combine_filters, concat, concat_ws, cos, count,
    count_distinct, create_udaf, create_udf, exp, exprlist_to_fields, floor, in_list,
    initcap, left, length, lit, ln, log10, log2, lower, lpad, ltrim, max, md5, min,
    octet_length, or, regexp_match, regexp_replace, repeat, replace, reverse, right,
    round, rpad, rtrim, sha224, sha256, sha384, sha512, signum, sin, split_part, sqrt,
    starts_with, strpos, substr, sum, tan, to_hex, translate, trim, trunc, upper, when,
    Expr, ExprRewriter, ExpressionVisitor, Literal, Recursion,
};
pub use extension::UserDefinedLogicalNode;
pub use operators::Operator;
pub use plan::{
    JoinType, LogicalPlan, Partitioning, PlanType, PlanVisitor, StringifiedPlan,
};
pub use registry::FunctionRegistry;