finchxxia opened a new issue, #2379:
URL: https://github.com/apache/datafusion-sqlparser-rs/issues/2379
# Doris SQL: Support Doris Dialect
## Summary
Add Doris SQL dialect, covering the core Doris syntax needed to parse common
Doris DDL and load statements.
## Motivation
Apache Doris has SQL syntax that differs from the generic SQL dialect,
especially around `CREATE TABLE` clauses, key models, partition/distribution
definitions, table properties, and Doris-specific load statements. A dedicated
`DorisDialect` would let users parse Doris SQL without weakening generic parser
behavior.
## Proposed Scope
- Add `DorisDialect`
- Support Doris `CREATE TABLE` clauses:
- `ENGINE = OLAP`
- `DUPLICATE KEY`, `UNIQUE KEY`, `AGGREGATE KEY`
- table `COMMENT`
- `PARTITION BY RANGE/LIST`
- `AUTO PARTITION`
- `DISTRIBUTED BY HASH/RANDOM`
- `BUCKETS` / `BUCKETS AUTO`
- `PROPERTIES (...)`
- Support Doris column options such as `AUTO_INCREMENT`
- Support Doris `LOAD DATA INFILE`
- Support Doris `CREATE ROUTINE LOAD`
- Preserve generic dialect behavior where Doris-only syntax should remain
rejected
## Parser / AST Changes
- Add Doris-specific AST structures for key model, partition, distribution,
table properties, and load statements
- Extend `CreateTable` with optional Doris-specific fields
- Add `Display` support for canonical SQL rendering
- Add span support for newly introduced AST nodes where applicable
## Tests
Add Doris parser tests covering:
- Positive Doris parsing cases
- Generic/ANSI rejection cases for Doris-only syntax
- AST structure assertions
- Round-trip canonical rendering
- Escaping behavior for table comments containing single quotes
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