qsv is a high-performance data-wrangling toolkit built in Rust that transforms how you work with tabular data. Whether you're processing millions of rows or performing complex data transformations, qsv delivers exceptional speed through its command-line interface.

The toolkit includes over 50 composable commands covering every aspect of data manipulation:

Data Querying & Analysis: Execute SQL queries, perform statistical analysis, and extract insights from large datasets
Transformation & Enrichment: Apply string, date, math, and currency transformations; detect sentiment, language, and similarity patterns
Data Quality: Validate records, remove duplicates, check data integrity, and identify inconsistencies
Integration: Join datasets, concatenate files, convert between formats (CSV, Excel, JSON, Parquet, Arrow), and export results
Performance: Process 15GB+ files in seconds with optional indexing and memory-mapped reading

Key capabilities include time series analysis, NLP functions for text processing, BLAKE3 hashing for data verification, and clipboard integration for seamless workflow integration. The tool supports multiple data formats and includes features like pretty-printed colored output, batch operations, and environment variable configuration.

Designed for data professionals, analysts, and engineers who need reliable, fast data processing without leaving the command line. qsv's composable architecture means you can chain commands together to build complex data pipelines efficiently.

Cargo