Getting the minimum day in a date column from a filtered table

[isasai87]

Hi all!!

I am new to Power BI and DAX functions and I would be really thankful if you could help me with this!!

I am trying to recreate the following sql script with a dax function:

select id_region, min(date)
where n_products <> 0
group by id_region;

So lets say I have a product that I have just launch in the market in several regions and I am evaluating my marketing campaing. I have a record of the number of products that I sell each day in each region (each record will have a zero for the "number of products sold" until I dont start selling products)

Basically I have a table with three columns (id_region, date and num_prod --number of products sold--) so for each region I have a record of the number of products that were sold each day (for a particular product). 

--> I want to create a measure that gives me the first day that this product started being sold in each region (I dont need the region in my DAX since I will aggregate it later in Power BI)

I have created the followint DAX function but its giving me a wrong result:

prod_date1 = CALCULATE(min('productA'[date] ),
FILTER ( 'productA',
'productA'[num_prod] <> 0)
)

Thank you sooo much in advance!!!!!!!!
Isabel

[camargos88 · Accepted solution]

Hi @isasai87 ,

You can drag the region_id to the table visual and this measure:

Measure = CALCULATE(MIN('Table (2)'[date]))

However, it's better if you post some data and expected results as example. Just to check what you have so far.

[camargos88 · Accepted solution]

Hi @isasai87 ,

You can drag the region_id to the table visual and this measure:

Measure = CALCULATE(MIN('Table (2)'[date]))

However, it's better if you post some data and expected results as example. Just to check what you have so far.

[isasai87]

Thanks @camargos88 , you are right, I shoudl have posted some data.

Here it is a sample of the data set and what I am expected to get:

I have more regions that this and I would like to create a measure that gets me the day when I started geting sales in each region. In PowerBI then I would use the measure that involves DATE and N_PROD and then present it in a table aggregated by region.

In SQL this is somthing quit simple but I just dont get the right DAX formula to implemented in Power BI  😞 😞 😞

Thank you very much again! 🙂

Isabel

[camargos88 · Accepted solution]

@isasai87 ,

Check it:

[isasai87]

Thank you very much!!!

I cant believe it was so easy!!

I was actually close but I was complitely obsessed with using "filter" 😅

Thanks 😊