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Power Query Last 7 Days From Max Date Column
Hi everyone, I want to use Power Query to add a custom column which identifies whether a date value from a date column is "within" or "outside" the last 7 days from the maximum date in the date ...
Sorry. Forgot that part. Here you go.
let maxdate = List.Max(#"Previous Step"[Date]) in if [Date] >= Date.AddDays(maxdate, -7) then "Y" else "N"
Pat
Thanks Pat. I suspect I have messed up the syntax here? The name of the Date column is "d".
let
Source = Sql.Database("xxx", "xxx", [Query="select * from ##dates"]),
#"Changed Type with Locale" = Table.TransformColumnTypes(Source, {{"d", type date}}, "en-GB"),
Custom1 = Table.AddColumn(#"Changed Type with Locale", "IsLast7Days", let maxdate = List.Max(#"Changed Type with Locale"[d]) in if [d] >= Date.AddDays(maxdate, -7) then "Y" else "N")
in
Custom1
imranamikhan if you intend to bring only last 7 days of data from the SQL server, it will be lot easier and performant to do on the server-side
/*TSQL Query to get only data from last 7 days*/ select * /*, CASE WHEN gl_date>=DATEADD(DAY,-7,GETDATE()) then 'within last 7days' else 'outside of last 7days' end as filter*/ from [dbo].[Actuals] where gl_date>=DATEADD(DAY,-7,GETDATE()) /*TSQL Query to identify if the data is from last 7 days*/ select * , CASE WHEN gl_date>=DATEADD(DAY,-7,GETDATE()) then 'within last 7days' else 'outside of last 7days' end as filter from [dbo].[Actuals] /*where gl_date>=DATEADD(DAY,-7,GETDATE())*/Thanks for the suggestion smpa01 but there is a specific reason I want to use Power Query as opposed to delegating back to SQL server.
imranamikhan sure no worries
I was complicating things - now corrected by adding Pat's formula to a custom column.
let maxdate = List.Max(#"Changed Type with Locale"[d]) in if [d] >= Date.AddDays(maxdate, -7) then 1 else 0
