Subquery

[wenners68]

Hi,

I want to create a measure that sums sales figures based on customers who bought something this edition, but not last.

The edition is just a book edition and not relevant to a time/date. I would write the following in SQL:

SELECT

SUM(a.Total) AS TotalSales

FROM SalesTable a

WHERE a.edition = "2017"

AND a.accountid NOT IN (SELECT accountid FROM SalesTable WHERE a.edition  = "2016")

Any idea if this is posibble to do in a Measure?

[v-chuncz-msft]

@wenners68,

You may take a good look at the article below.

https://www.sqlbi.com/articles/from-sql-to-dax-in-and-exists/

[ricardocamargos]

Hi @wenners68,

Try this code:

_2017 =
VAR _2016 = SELECTCOLUMNS(FILTER(SalesTable; SalesTable[EDITION] = 2016); "ACCOUNTID"; SalesTable[ACCOUNT_ID])
VAR _2017 = SELECTCOLUMNS(FILTER(SalesTable; SalesTable[EDITION] = 2017); "ACCOUNTID"; SalesTable[ACCOUNT_ID])
VAR _tbl = EXCEPT(_2017; _2016)
RETURN
SUMX(FILTER(SalesTable; SalesTable[ACCOUNT_ID] IN (_tbl)); SalesTable[TOTAL])

[wenners68]

Hi,

thanks, but that will only give you a total for the entire edition.

[Greg_Deckler]

Perhaps create a calculated column first that goes something like:

BoughtLastYear = IF(ISBLANK(SUMX(FILTER(TotalSales,TotalSales[accountid]=EARLIER(TotalSales[accountid])&&TotalSales[edition]=EARLIER(TotalSales[edition]-1)),TotalSales[Total)),"No","Yes")

Should create a column with Yes if they bought last year and No if they didn't. Then you could create a Measure like:

MyMeasure = CALCULATE(SUM(TotalSales[Total]),FILTER(TotalSales,BoughtLastYear="Yes"))