def nth(arg, k):
"""
Analytic operation computing nth value from start of sequence
Parameters
----------
arg : array expression
k : int
Desired rank value
Returns
-------
nth : type of argument
"""
return _ops.NthValue(arg, k).to_expr()
def nth(self, n: int | ir.IntegerValue) -> Column:
"""Return the `n`th value over a window.
Parameters
----------
n
Desired rank value
Returns
-------
Column
The nth value over a window
"""
import ibis.expr.operations as ops
return ops.NthValue(self, n).to_expr()