CSV Query

Query tabular data files using SQL via the Polars-powered sqlp command.

Cowork note: If relative paths don't resolve, call mcp__qsv__qsv_get_working_dir and mcp__qsv__qsv_set_working_dir to sync the working directory.

Decision Tree

Is the query simple (single column filter, basic select)?

• Yes -> Consider select + search for simpler operations
• No -> Use sqlp for full SQL support

Does the query involve joins, GROUP BY, window functions, or complex expressions?

• Yes -> Use sqlp (Polars SQL engine)

Is the CSV file very large (> 10MB)?

• Yes -> Consider converting to Parquet with mcp__qsv__qsv_to_parquet for faster repeated queries. Note: sqlp can also query CSV files of any size directly.

Steps