ibis.trailing_window¶
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ibis.
trailing_window
(periods, group_by=None, order_by=None)¶ Create a trailing window for use with aggregate window functions.
Parameters: periods : int
Number of trailing periods to include. 0 includes only the current period
group_by : expressions, default None
Either specify here or with TableExpr.group_by
order_by : expressions, default None
For analytic functions requiring an ordering, specify here, or let Ibis determine the default ordering (for functions like rank)
Returns: win : ibis Window