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Frequent Visitor

## DAX - POWER PIVOT measures using date before date

Hello fellow DAX enthusiasts,

I can do this simply in Ms Excel. But I am struggling to write the DAX to have as measures in a Power Pivot in Excel.

Sample data below drawn from Table named PriceData. PriceData data-model is joined to Tbl_Dates (calendar 2023)

Please advise how I can write a measure to get EarlyDate and EarlyValue

 PART SUP_NAME DATE Cost EarlyDate EarlyValue % Change ABC Test123 22/06/2023 1.5044 ABC Test123 21/07/2023 1.5044 22/06/2023 1.5044 0.0% ABC Test123 29/08/2023 1.5044 21/07/2023 1.5044 0.0% ABC Test123 18/09/2023 3.625 29/08/2023 1.5044 141.0% ABC Test123 03/10/2023 1.5088 18/09/2023 3.625 -58.4% ABC Test123 24/10/2023 1.6244 03/10/2023 1.5088 7.7%
2 ACCEPTED SOLUTIONS
Super User

Hi @PaulStokes possible solution as following

create 3 different calculated columns as you are calculating amounts based on row level

Creation order is important to avoid complexity. Output below is the same as your picture

1. EarlyDate

=
VAR __part=MyTable[PART]
VAR __sup_name=MyTable[SUP_NAME]
VAR __date=MyTable[DATE]
RETURN
CALCULATE(
MAX(MyTable[DATE]);
FILTER(MyTable;MyTable[PART]=__part && MyTable[SUP_NAME]=__sup_name && MyTable[DATE]<__date)
)

2. EarlyValue

=VAR __part=MyTable[PART]
VAR __sup_name=MyTable[SUP_NAME]
VAR __date_early=MyTable[EarlyDate]
RETURN
CALCULATE(
SUM(MyTable[Cost]);
FILTER(MyTable;MyTable[PART]=__part && MyTable[SUP_NAME]=__sup_name && MyTable[DATE]=__date_early)
)

3.% Change

=
IF(MyTable[EarlyValue]=BLANK();BLANK();
MyTable[Cost]/MyTable[EarlyValue]-1)

Proud to be a Super User!

Frequent Visitor

WOW ! BIG Kudos to some_bih for the reply and answer to my question. Resolved 🙂

2 REPLIES 2
Super User

Hi @PaulStokes possible solution as following

create 3 different calculated columns as you are calculating amounts based on row level

Creation order is important to avoid complexity. Output below is the same as your picture

1. EarlyDate

=
VAR __part=MyTable[PART]
VAR __sup_name=MyTable[SUP_NAME]
VAR __date=MyTable[DATE]
RETURN
CALCULATE(
MAX(MyTable[DATE]);
FILTER(MyTable;MyTable[PART]=__part && MyTable[SUP_NAME]=__sup_name && MyTable[DATE]<__date)
)

2. EarlyValue

=VAR __part=MyTable[PART]
VAR __sup_name=MyTable[SUP_NAME]
VAR __date_early=MyTable[EarlyDate]
RETURN
CALCULATE(
SUM(MyTable[Cost]);
FILTER(MyTable;MyTable[PART]=__part && MyTable[SUP_NAME]=__sup_name && MyTable[DATE]=__date_early)
)

3.% Change

=
IF(MyTable[EarlyValue]=BLANK();BLANK();
MyTable[Cost]/MyTable[EarlyValue]-1)

Proud to be a Super User!

Frequent Visitor

WOW ! BIG Kudos to some_bih for the reply and answer to my question. Resolved 🙂

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