mirror of
https://github.com/apache/datafusion-sqlparser-rs.git
synced 2025-09-23 06:02:30 +00:00
91 lines
2.8 KiB
Rust
91 lines
2.8 KiB
Rust
// Licensed 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.
|
|
|
|
//! # SQL Parser for Rust
|
|
//!
|
|
//! This crate provides an ANSI:SQL 2011 lexer and parser that can parse SQL
|
|
//! into an Abstract Syntax Tree ([`AST`]). See the [sqlparser crates.io page]
|
|
//! for more information.
|
|
//!
|
|
//! For more information:
|
|
//! 1. [`Parser::parse_sql`] and [`Parser::new`] for the Parsing API
|
|
//! 2. [`ast`] for the AST structure
|
|
//! 3. [`Dialect`] for supported SQL dialects
|
|
//!
|
|
//! # Example parsing SQL text
|
|
//!
|
|
//! ```
|
|
//! use sqlparser::dialect::GenericDialect;
|
|
//! use sqlparser::parser::Parser;
|
|
//!
|
|
//! let dialect = GenericDialect {}; // or AnsiDialect
|
|
//!
|
|
//! let sql = "SELECT a, b, 123, myfunc(b) \
|
|
//! FROM table_1 \
|
|
//! WHERE a > b AND b < 100 \
|
|
//! ORDER BY a DESC, b";
|
|
//!
|
|
//! let ast = Parser::parse_sql(&dialect, sql).unwrap();
|
|
//!
|
|
//! println!("AST: {:?}", ast);
|
|
//! ```
|
|
//!
|
|
//! # Creating SQL text from AST
|
|
//!
|
|
//! This crate allows users to recover the original SQL text (with comments
|
|
//! removed, normalized whitespace and identifier capitalization), which is
|
|
//! useful for tools that analyze and manipulate SQL.
|
|
//!
|
|
//! ```
|
|
//! # use sqlparser::dialect::GenericDialect;
|
|
//! # use sqlparser::parser::Parser;
|
|
//! let sql = "SELECT a FROM table_1";
|
|
//!
|
|
//! // parse to a Vec<Statement>
|
|
//! let ast = Parser::parse_sql(&GenericDialect, sql).unwrap();
|
|
//!
|
|
//! // The original SQL text can be generated from the AST
|
|
//! assert_eq!(ast[0].to_string(), sql);
|
|
//! ```
|
|
//!
|
|
//! [sqlparser crates.io page]: https://crates.io/crates/sqlparser
|
|
//! [`Parser::parse_sql`]: crate::parser::Parser::parse_sql
|
|
//! [`Parser::new`]: crate::parser::Parser::new
|
|
//! [`AST`]: crate::ast
|
|
//! [`ast`]: crate::ast
|
|
//! [`Dialect`]: crate::dialect::Dialect
|
|
|
|
#![cfg_attr(not(feature = "std"), no_std)]
|
|
#![allow(clippy::upper_case_acronyms)]
|
|
|
|
// Allow proc-macros to find this crate
|
|
extern crate self as sqlparser;
|
|
|
|
#[cfg(not(feature = "std"))]
|
|
extern crate alloc;
|
|
|
|
#[macro_use]
|
|
#[cfg(test)]
|
|
extern crate pretty_assertions;
|
|
|
|
pub mod ast;
|
|
#[macro_use]
|
|
pub mod dialect;
|
|
pub mod keywords;
|
|
pub mod parser;
|
|
pub mod tokenizer;
|
|
|
|
#[doc(hidden)]
|
|
// This is required to make utilities accessible by both the crate-internal
|
|
// unit-tests and by the integration tests <https://stackoverflow.com/a/44541071/1026>
|
|
// External users are not supposed to rely on this module.
|
|
pub mod test_utils;
|