How get the last value on a given date

[Anonymous]

Hi all. 
I have  table: 

that false.  Would like to see the remainder from 12885,82625 as of 04.12.2019
More samples as I want to see:

I try next queries, but nothing correct worked:
Remainder:=
var a = CALCULATE(LASTNONBLANK('Table1'[RemDoc], 1),
FILTER(ALL('Date'),'Date'[DateKey] <= MAX('Table1'[DateKey])))
var b = IF((a<=0),0)
return a
******

Remainder:=
var suma = CALCULATE (SUM('Table1'[RemDoc]),
FILTER (ALL('Date'),'Date'[DateKey] <= MAX('Table1'[DateKey])))
var rem = IF((suma<0),0,suma)
return rem

******

Остаток:=
SUMX (VALUES ('Table1'[Partner]),
VAR LastBalanceDate = CALCULATE ( MAX ( Table1'[DateKey] ) )
RETURN
CALCULATE (
SUM ('Table1'[RemDoc]),
'Date'[DateKey] >= LastBalanceDate))
****
How to achieve the desired result?
Thanks for your helps.

[v-rzhou-msft · Accepted solution]

Hi @Anonymous 

I think you can add an index column in Power Query Editor.

My Sample:

Group all rows by DateKey column, then add an index column by custom column.

Expand all column in Custom and remove other columns.

Build a calendar table for slicer.

Calendar = CALENDARAUTO()

Then build a measure filter and Remainder measure.

Filter = IF(MAX('Table'[DatePay])<=SELECTEDVALUE('Calendar'[Date]),1,0)

Remainder = 
VAR _MaxDate = MAXX(FILTER(ALL('Table'),'Table'[Partner]=MAX('Table'[Partner])&&'Table'[DatePay]<=SELECTEDVALUE('Calendar'[Date])),'Table'[DatePay])
VAR _MaxIndex = MAXX(FILTER(ALL('Table'),'Table'[Partner]=MAX('Table'[Partner])&&'Table'[DatePay] = _MaxDate),'Table'[Rank])
RETURN
IF(HASONEVALUE('Table'[DateKey]),SUM('Table'[RemDoc]),SUMX(FILTER(ALL('Table'),'Table'[Partner]=MAX('Table'[Partner])&&'Table'[DatePay] = _MaxDate&&'Table'[Rank]=_MaxIndex),'Table'[RemDoc]))

Result is as below.

You can download the pbix file from this link: File

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. 

[Greg_Deckler]

@Anonymous - Do you have any other indicator like an Index column to denote the "latest"?

[Anonymous]

@Greg_Deckler , No