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atoti.lookup(
    column: Column,
    mapping: _MappingCondition,
    /,
    **kwargs: Unpack[_LookupPrivateParameters],
) → MeasureDefinition
Return a measure equal to a get-by-key query on the given table column.

Parameters

column

The column to get the value from.

mapping

A condition made of equality checks on all the keys of the passed column’s Table.