How do I shift values in columns?

Use special variables i or ii if your table is static and append-only. If your table is ticking, or not append-only, use update_by with rolling_group_tick. Using i looks like:

result = source.update(["ColShiftedUpOne = Col_[i - 1]", "ColShiftedDownOne = Col_[i + 1]]")

note

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