## engines.ENGINES


The engines a [Connection](engines.Connection.md#sverify.engines.Connection) runs plans on: `"duckdb"` (the default),


`engines.ENGINES: tuple[Engine, …] = (``"duckdb", `<span class="st">`"polars"``, ``"datafusion"``)`</span>


`"polars"` and `"datafusion"`. Loop over it to run a plan on each, as the tests do. [sverify.engines.run](engines.run.md#sverify.engines.run) also takes `"spark"` or a Spark session.