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from __future__ import annotations
from typing import TYPE_CHECKING
from duckdb import FunctionExpression
from narwhals._duckdb.utils import lit
if TYPE_CHECKING:
from narwhals._duckdb.expr import DuckDBExpr
class DuckDBExprStructNamespace:
def __init__(self, expr: DuckDBExpr) -> None:
self._compliant_expr = expr
def field(self, name: str) -> DuckDBExpr:
return self._compliant_expr._with_callable(
lambda expr: FunctionExpression("struct_extract", expr, lit(name))
).alias(name)
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