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Destrogiro's avatar
Destrogiro
Regular Visitor
7 years ago
Solved

EARLIER Function

Hi, I'm new to Power BI and I'm having trouble with EARLIER function. Basically what I need is:   ValorTotal = SWITCH(TCBLBI_Peso_Empresas_Tradadas[OrdemGrupo];                     2; EARLIER([Va...
  • AlB's avatar
    AlB
    7 years ago

    Since the introduction of VAR, there's no actual need for EARLIER any longer.  So you might want to do it in a different way, perhaps easier to follow conceptually, and forget about EARLIER altogether (which is actually recommended nowadays):

    Value2 =
SWITCH (
    TRUE (),
    Table1[GroupOrder] IN { 1, 4, 7 }, 0,
    Table1[GroupOrder] IN { 2, 5, 8 },
    VAR PreviousGroupOrder_ = Table1[GroupOrder] - 1
    RETURN
        CALCULATE (
            DISTINCT ( Table1[Value 1] ),
            Table1[GroupOrder] = PreviousGroupOrder_,
            ALLEXCEPT ( Table1, Table1[Date] )
        ),
    Table1[GroupOrder] IN { 3, 6, 9 },
    VAR PreviousGroupOrder2_ = Table1[GroupOrder] - 2
    RETURN
        CALCULATE (
            DISTINCT ( Table1[Value 1] ),
            Table1[GroupOrder] = PreviousGroupOrder2_,
            ALLEXCEPT ( Table1, Table1[Date] )
        )
)
AlB's avatar
AlB
Icon for Community Champion rankCommunity Champion
7 years ago

Hi Destrogiro 

EARLIER works in a completely different way from what you seem to be assuming. It gives you access to the outer row context, not to the previous row.  Try this for your calculated column, where I'm assuming you need this done by date:

 

Value2 =
SWITCH (
    TRUE (),
    Table1[GroupOrder] IN { 1, 4, 7 }, 0,
    Table1[GroupOrder] IN { 2, 5, 8 }, CALCULATE (
        DISTINCT ( Table1[Value 1] ),
        Table1[GroupOrder]
            = ( EARLIER ( Table1[GroupOrder] ) - 1 ),
        ALLEXCEPT ( Table1, Table1[Date] )
    ),
    Table1[GroupOrder] IN { 3, 6, 9 }, CALCULATE (
        DISTINCT ( Table1[Value 1] ),
        Table1[GroupOrder]
            = ( EARLIER ( Table1[GroupOrder] ) - 2 ),
        ALLEXCEPT ( Table1, Table1[Date] )
    )
)

 

   

 

AlB's avatar
AlB
Icon for Community Champion rankCommunity Champion
7 years ago

Since the introduction of VAR, there's no actual need for EARLIER any longer.  So you might want to do it in a different way, perhaps easier to follow conceptually, and forget about EARLIER altogether (which is actually recommended nowadays):

Value2 =
SWITCH (
    TRUE (),
    Table1[GroupOrder] IN { 1, 4, 7 }, 0,
    Table1[GroupOrder] IN { 2, 5, 8 },
    VAR PreviousGroupOrder_ = Table1[GroupOrder] - 1
    RETURN
        CALCULATE (
            DISTINCT ( Table1[Value 1] ),
            Table1[GroupOrder] = PreviousGroupOrder_,
            ALLEXCEPT ( Table1, Table1[Date] )
        ),
    Table1[GroupOrder] IN { 3, 6, 9 },
    VAR PreviousGroupOrder2_ = Table1[GroupOrder] - 2
    RETURN
        CALCULATE (
            DISTINCT ( Table1[Value 1] ),
            Table1[GroupOrder] = PreviousGroupOrder2_,
            ALLEXCEPT ( Table1, Table1[Date] )
        )
)