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Apache DataFusion Physical Expression Adapter

Apache DataFusion is an extensible query execution framework, written in Rust, that uses Apache Arrow as its in-memory format.

This crate provides utilities for adapting physical expressions to different schemas in DataFusion.

It handles schema differences in file scans by rewriting expressions to match the physical schema, including type casting, missing columns, and partition values.

For detailed documentation, see the PhysicalExprAdapter trait documentation.

Most projects should use the datafusion crate directly, which re-exports this module. If you are already using the datafusion crate, there is no reason to use this crate directly in your project as well.