Build the column with flag if is the first date

[Anonymous]

Hi guys,
I have a table below:

I need to build a an adicitonal column when shows 1 if the first date and 0 outherwise like this:

Thanks

[amitchandak · Accepted solution]

@Anonymous , Create a new column like

new column =
if([Date] = minx(filter(Table, [Id] = earlier([ID])),[Date]),1,0)

[Jihwan_Kim · Accepted solution]

Hi, @Anonymous 

Please try the below for creating a new column.

is first =
VAR currentdate = 'Table'[Date]
VAR currentid = 'Table'[id]
VAR previousdateidcolum =
SUMMARIZE (
CALCULATETABLE ( 'Table', FILTER ( 'Table', 'Table'[Date] < currentdate ) ),
'Table'[id]
)
RETURN
IF ( currentid IN previousdateidcolum, 0, 1 )

Hi, My name is Jihwan Kim.

If this post helps, then please consider accept it as the solution to help other members find it faster, and give a big thumbs up.

[amitchandak · Accepted solution]

@Anonymous , Create a new column like

new column =
if([Date] = minx(filter(Table, [Id] = earlier([ID])),[Date]),1,0)