# Run a lazy query now

Control / exec

A variant of [Run an external command](https://meridian.online/operations/run-an-external-command).

Force a lazy query plan to run and return its result as a table.

Page: <https://meridian.online/operations/run-an-external-command/run-a-lazy-query-now>

## Status

Not built yet.

arcform does not do this yet; it would live in how a Protocol runs. [Its place on the roadmap](https://meridian.online/roadmap#run-an-external-command)

## What other tools call it

Meridian's classification; an independent blind rating agreed on 95.7% of 324 rows (variant, version 3).

- Apache DataFusion: [`cache`](https://docs.rs/datafusion/latest/datafusion/dataframe/struct.DataFrame.html) (read 2026-09-27)
- Apache DataFusion: [`collect`](https://docs.rs/datafusion/latest/datafusion/dataframe/struct.DataFrame.html) (read 2026-09-27)
- Polars: [`LazyFrame query execution (family)`](https://docs.pola.rs/api/python/stable/reference/lazyframe/miscellaneous.html) (read 2026-09-27)
- Polars: [`Multiple queries (family)`](https://docs.pola.rs/api/python/stable/reference/functions.html) (read 2026-09-27)
- RapidMiner Studio: [`Materialize Data`](https://docs.rapidminer.com/latest/studio/operators/utility/misc/materialize_data.html) (read 2026-09-27)