SQL scratchpad

Query a CSV or Parquet file with real SQL. The engine runs in this tab.

Engine not started

Your data

Drop a file, or click to chooseCSV, TSV, Parquet or JSON

Files are read straight off your disk by the engine in this tab. They are not copied anywhere, and closing the page discards everything.

Your query

Ctrl / ⌘ + Enter to run

Result

Run a query and the rows appear here.

What this is, and what it is not

This is DuckDB, not your warehouse. Its SQL is close to PostgreSQL, so Athena, T-SQL and Oracle specifics will not run here — use it to check that logic is right against sample rows, then take the query to the engine it belongs to.

Nothing is uploaded, and that is checkable rather than promised. The engine itself is served from this same origin, so even loading it makes no request to anyone else. Watch the network tab while you drop a file: it stays silent.