Module args 

Core extension data structures without parser dependencies

This module contains the core data structures for extension arguments, values, and columns without any parser or textify dependencies.

Structs

ArgsExtractor

Helper struct for extracting named arguments with validation.

ExtensionArgs

Represents the arguments and output columns for an extension relation.

RawExpression 🔒

Placeholder for a future expression implementation. Holds the raw text of the parsed expression. The inner field is private — this type will be replaced with a proper expression AST in the future.

Enums

ExtensionColumn

Represents an output column specification

ExtensionRelationType

Extension relation types

ExtensionValue

Represents a value in extension arguments