Function field_path_to_expr 

pub fn field_path_to_expr(field_path: &str) -> Result<Expr>

Convert a field path string into a DataFusion expression.

This function handles:

• Simple column names: “column”
• Nested paths: “parent.child” or “parent.child.grandchild”
• Backtick-escaped field names: “parent.field.with.dots”

Arguments

• field_path - The field path to convert. Supports simple columns, nested paths, and backtick-escaped field names.

Returns

Returns Result<Expr> - Ok with the DataFusion expression, or Err if the path could not be parsed.

Example

use lance_datafusion::logical_expr::field_path_to_expr;

// Simple column
let expr = field_path_to_expr("column_name").unwrap();

// Nested field
let expr = field_path_to_expr("parent.child").unwrap();

// Backtick-escaped field with dots
let expr = field_path_to_expr("parent.`field.with.dots`").unwrap();