Module dfschema 

DFSchema is an extended schema struct that DataFusion uses to provide support for fields with optional relation names.

Structs

DFSchema

DFSchema wraps an Arrow schema and adds relation names.

Traits

ExprSchema

Provides schema information needed by certain methods of Expr (defined in the datafusion-common crate).

SchemaExt

DataFusion-specific extensions to [Schema].

ToDFSchema

Convenience trait to convert Schema like things to DFSchema and DFSchemaRef with fewer keystrokes

Functions

format_field_with_indent 🔒

Format field with proper nested indentation for complex types

format_simple_data_type 🔒

Format simple DataType in lowercase format (for leaf nodes)

qualified_name

Type Aliases

DFSchemaRef

A reference-counted reference to a DFSchema.