# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [1.0.0] - 2025-12-20
### Added
- Initial release of sql-splitter CLI tool (Rust rewrite of the Go version)
- **`split` command**: Split large SQL dump files into individual table files
- `--output, -o`: Specify output directory (default: `output`)
- `--verbose, -v`: Enable verbose output
- `--progress, -p`: Show progress during processing
- `--tables, -t`: Filter to split only specific tables (comma-separated)
- `--dry-run`: Preview what would be split without writing files
- **`analyze` command**: Analyze SQL files and display statistics
- `--progress, -p`: Show progress during analysis
- **High-performance streaming parser**
- 400-500 MB/s typical throughput (1.25x faster than Go version on large files)
- Memory-efficient: ~80 MB constant usage regardless of file size
- Handles strings with escaped characters and multi-line statements
- Adaptive buffer sizing based on file size
- **Concurrent writing**: Efficient multi-table writing with writer pools
- **Statement type support**: CREATE TABLE, INSERT INTO, CREATE INDEX, ALTER TABLE, DROP TABLE
- **Version flag**: `--version` to display version information
### Performance
- Streaming architecture handles files larger than available RAM
- Zero-copy parsing using byte slices where possible
- Pre-compiled regexes for fast pattern matching
- Optimized buffer sizes for CPU cache efficiency
- 1.25x faster than Go version on files >1GB
### Documentation
- Comprehensive README with usage examples
- AGENTS.md for AI assistant guidance
- Performance benchmarks and comparison with Go/PHP versions
## [Unreleased]
### Planned
- Compressed file support (gzip, bzip2)
- PostgreSQL COPY statement support
- Parallel parsing for very large files