SQL is a powerful tool for analyzing data; however, transforming datasets with SQL can be challenging when you haven’t set up a database. To make it easier to analyze local files, Rill Data has released Rill Developer. Rill Developer enables users to easily import local datasets (e.g., CSV, Parquet files) into a duckDB database and then analyze imported tables through a GUI that is optimized for exploratory analysis. Most notably, the user interface automatically profiles datasets and query results, thereby helping users understand the shape of their data.