Cannot nest aggregate functions (Error 1844)
Nesting of the aggregate functions MIN( ), MAX( ), and/or the CALCULATE command sub functions: AVG( ), CNT( ), MAX( ), MIN( ), NPV( ), STD( ), SUM( ), or VAR( ), is not permitted.
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Nesting of the aggregate functions MIN( ), MAX( ), and/or the CALCULATE command sub functions: AVG( ), CNT( ), MAX( ), MIN( ), NPV( ), STD( ), SUM( ), or VAR( ), is not permitted.