Forum Discussion

Raulx_7's avatar
Raulx_7
Icon for Helper I rankHelper I
5 years ago
Solved

Inventory price update

Hi, I have 3 tables:

- Dates 

- Products 

- Price 

 

The current price is calculated using a metric, where can be specified if the value is the current or accumulated. 

This measure is called: CPrice, and the value that is using to calculate is Products[productValue]

 

My goal is to find the change in price form each product, since the filter is set by year, I want to check the product in order to compare the selected month and the previous one. 

 

For example: 

Filter in the visual selected: Year:  2020, Month July.

FruitJanFebMarchAprilMayJunJulyWhat I want
Apple     57+2
Orange     31-2

 

I want to know the it the item is lower or higher compared to the previous month. 

 

Reading other post with similar things in common I decided to crate a measure with two variables

 

 

 

PriceChange = 
VAR LastPirce =
    CALCULATE (
        VALUES (Price[Price]  ),
        FILTER ( Dates, Dates[Date] = MAX ( Dates[Date] ) )
    )
VAR SecondLastDate =
    CALCULATE (
        MAX ( Dates[Date] ),
        FILTER ( Dates, Dates[Date] < MAX ( Dates[Date] ) )
    )
RETURN
    LastPirce
        - CALCULATE ( VALUES ( Price[Price] ), Dates[Date] = SecondLastDate )

 

However, I did not get any result in when I use the variable in my matrix. 

I'm trying to visualize it in a matrix where the fields using are: 

 

ROWS: 2 columns that specify category and name of the product. 

Columns: Date[Year-Month] [Month]

Values: CPrice, Price, PriceChange

The result of PriceChange is empty.

Need Help
Tutorial Requests
  • Anonymous's avatar
    Anonymous
    5 years ago

    Hi Raulx_7 

    According to your statement, I know your have three tables.

    - Dates 

    - Products 

    - Price 

    From your code, I think Price table should be related with Dates table, but I don't know what your data model actually looks like.

    I think your connection mode is live connection, so you couldn't build a rank column.

    I update the measure.

    NewMeasure = 
VAR _CPrice =
    SUM ( 'Price'[Price] )
VAR _LastMonthEnd =
    EOMONTH ( MAX ( 'Date'[Date] ), -1 )
VAR _LastMonthStart =
    EOMONTH ( MAX ( 'Date'[Date] ), -2 ) + 1
VAR _LMPrice =
    CALCULATE (
        SUM ( 'Price'[Price] ),
        FILTER (
            ALL ( 'Date' ),
            'Date'[Date] >= _LastMonthStart
                && 'Date'[Date] <= _LastMonthEnd
        )
    )
RETURN
    _CPrice - _LMPrice

    Result is as below.

    Best Regards,

    Rico Zhou

     

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly. 

     

     

3 Replies

  • Anonymous's avatar
    Anonymous
    Not applicable
    5 years ago

    Hi Raulx_7 

    I build a sample to have a test, I think you need to use all function in filter field in your dax code or you will get empty result.

    My Sample is as below.

    Price Table:

    Product Table:

    Date Table:

    Date =
VAR _T =
    ADDCOLUMNS (
        CALENDARAUTO (),
        "Year", YEAR ( [Date] ),
        "Month", MONTH ( [Date] ),
        "MonthName", FORMAT ( [Date], "MMM" ),
        "YearMonth",
            YEAR ( [Date] ) * 100
                + MONTH ( [Date] )
    )
VAR _ADDRANK =
    ADDCOLUMNS ( _T, "RANK", RANKX ( _T, [YearMonth],, ASC, DENSE ) )
RETURN
    _ADDRANK

    Relationship:

    Measure:

    PriceChange =
VAR _CPrice =
    SUM ( 'Price'[Price] )
VAR _LastMonth =
    MAX ( 'Date'[RANK] ) - 1
VAR _LMPrice =
    CALCULATE (
        SUM ( 'Price'[Price] ),
        FILTER ( ALL ( 'Date' ), 'Date'[RANK] = _LastMonth )
    )
RETURN
    _CPrice - _LMPrice

    Build a rank for each yearmonth in date, then you just need to get price in current rank-1(price in last month.). Result is as below.

    Select 2020,July.

    Best Regards,

    Rico Zhou

     

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly. 

     

    • Raulx_7's avatar
      Raulx_7
      Icon for Helper I rankHelper I
      5 years ago

      Thanks, but my problem is that I cannot edit the tables and relations in this dashboard (is connected to a cube), I can only create measures. Then create the rank column is not possible. 

      • Anonymous's avatar
        Anonymous
        Not applicable
        5 years ago

        Hi Raulx_7 

        According to your statement, I know your have three tables.

        - Dates 

        - Products 

        - Price 

        From your code, I think Price table should be related with Dates table, but I don't know what your data model actually looks like.

        I think your connection mode is live connection, so you couldn't build a rank column.

        I update the measure.

        NewMeasure = 
VAR _CPrice =
    SUM ( 'Price'[Price] )
VAR _LastMonthEnd =
    EOMONTH ( MAX ( 'Date'[Date] ), -1 )
VAR _LastMonthStart =
    EOMONTH ( MAX ( 'Date'[Date] ), -2 ) + 1
VAR _LMPrice =
    CALCULATE (
        SUM ( 'Price'[Price] ),
        FILTER (
            ALL ( 'Date' ),
            'Date'[Date] >= _LastMonthStart
                && 'Date'[Date] <= _LastMonthEnd
        )
    )
RETURN
    _CPrice - _LMPrice

        Result is as below.

        Best Regards,

        Rico Zhou

         

        If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.