power query date help

[DeveshSeth]

Hi, 

I have two tables read from data in spreadsheet. The first query has a column of dates (apart from many other columns) and the second query has a single col/row containing AsOf Date. I want to check whether the dates in my first query are in past/or in future compared to AsOf Date.

Table1[XYZdates]   -- Table1 has 10 columns and 10 rows. One of the columns contain dates. 

Table2[AsOf]   -- Table2 is just a query of a single date picked from a spreadsheet. 

I'm trying to add another column to Table1 in Power Query that tells me 'Y/N' depending on whether XYZdates is greater than or less than AsOf date. 

How best do we achieve this?

Thanks.

[v-xuding-msft · Accepted solution]

Hi @DeveshSeth ,

Please try like this:

= Table.AddColumn(#"Reordered Columns", "Custom", each if [XYZdates] >= Table2[AsOf]{0} then "Y" else "N")

[amitchandak]

@DeveshSeth , In dax this will give you max date from table2 to  a new column in table 1 =maxx(Table2,Table2[AsOf date])

In M you have List.Max and Table.Max that you can try to use