daft.Expression.alias#
- Expression.alias(name: str) Expression[source]#
Gives the expression a new name, which is its column’s name in the DataFrame schema and the name by which subsequent expressions can refer to the results of this expression.
Example
>>> import daft >>> df = daft.from_pydict({"x": [1, 2, 3]}) >>> df = df.select(col("x").alias("y")) >>> df.show() ╭───────╮ │ y │ │ --- │ │ Int64 │ ╞═══════╡ │ 1 │ ├╌╌╌╌╌╌╌┤ │ 2 │ ├╌╌╌╌╌╌╌┤ │ 3 │ ╰───────╯ (Showing first 3 of 3 rows)
- Parameters:
name – New name for expression
- Returns:
Renamed expression
- Return type:
Expression