def _get_window(self):
if self._window is None:
groups = self.by
sorts = self._order_by
preceding, following = None, None
else:
w = self._window
groups = w.group_by + self.by
sorts = w.order_by + self._order_by
preceding, following = w.preceding, w.following
sorts = [ops.to_sort_key(self.table, k) for k in sorts]
return _window.window(preceding=preceding, following=following,
group_by=groups, order_by=sorts)
def _get_window(self):
if self._window is None:
groups = self.by
sorts = self._order_by
preceding, following = None, None
else:
w = self._window
groups = w.group_by + self.by
sorts = w.order_by + self._order_by
preceding, following = w.preceding, w.following
sorts = [ops.to_sort_key(self.table, k) for k in sorts]
return _window.window(preceding=preceding,
following=following,
group_by=groups,
order_by=sorts)
def bind(self, table):
# Internal API, ensure that any unresolved expr references (as strings,
# say) are bound to the table being windowed
groups = table._resolve(self._group_by)
sorts = [ops.to_sort_key(table, k) for k in self._order_by]
return self._replace(group_by=groups, order_by=sorts)
def bind(self, table):
# Internal API, ensure that any unresolved expr references (as strings,
# say) are bound to the table being windowed
groups = table._resolve(self._group_by)
sorts = [ops.to_sort_key(table, k) for k in self._order_by]
return self._replace(group_by=groups, order_by=sorts)