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joelv67's avatar
joelv67
Frequent Visitor
9 years ago
Solved

List.First(List.Select()) comparing column table to containing table

background: I have in my main table a CreateDate. I have created a column of data from the main table, for each row, it contains 1 or more records. I am trying to grab the First Date from the newtab...
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  • ImkeF's avatar
    ImkeF
    9 years ago

    sorry, there was an Earlier missing:

     

    = Table.AddColumn(#"Added Custom3", "StartDate2", (Earlier) => List.First( List.Select(Earlier[NewTable][CreateDate], each _ < Earlier[CreateDate] )))

     

ImkeF's avatar
ImkeF
Community Champion
9 years ago

Pls try:

 

= Table.AddColumn(#"Added Custom3", "StartDate2", (Earlier) => List.First( List.Select([NewTable][CreateDate], each _ < Earlier[CreateDate] )))
joelv67's avatar
joelv67
Frequent Visitor
9 years ago

Thank you for the quick response. I am now getting this error:

Expression.Error: There is an unknown identifier. Did you use the [field] shorthand for a _[field] outside of an 'each' expression?