Forum Discussion
Mcode:Error result If Look Up Value doesnt exist at Source table (should show as blank not "Error")
Hi Anonymous
It takes time to scan so many rows while using Table.SelectRows, please try Table.Group suggested by CNENFRNL edhans
you need to put the code offered by CNENFRNL after your currentLookUp = [UniqueValue] like this and paste in the custom column
=let currentLookUp = [UniqueValue] in Table.Group("LookUp", "UniqueValueCol", {"Grouped", each _}){[UniqueValue=currentLookUp]}?[Grouped]?{0}?[CategoryValue]?
Hello, I 've tried below, however my table loads really slow? Any ideas on how I can optimize my formula?
= (let currentLookUp = try [UniqueValue] in Table.SelectRows("LookUp", each [UniqueValueCol] = currentLookUp)){0}[CategoryValue]) otherwise ""
Hi Anonymous
have a try
= let
currentLookUp = [UniqueValue],
a = Table.SelectRows("LookUp", each [UniqueValueCol] = currentLookUp){0}?,
b= if a = null then "" else a[CategoryValue]
in
b
hi Anonymous , got the same result in my previous formula thanks! However it takes a while to load right after clicking close and load from power query. I wonder If there is a way to make it much more faster its like 50 rows per minute and I have 35,000 rows.
Hi Anonymous
It takes time to scan so many rows while using Table.SelectRows, please try Table.Group suggested by CNENFRNL edhans
you need to put the code offered by CNENFRNL after your currentLookUp = [UniqueValue] like this and paste in the custom column
=let currentLookUp = [UniqueValue] in Table.Group("LookUp", "UniqueValueCol", {"Grouped", each _}){[UniqueValue=currentLookUp]}?[Grouped]?{0}?[CategoryValue]?Hi Anonymous Vera,
Tried CNENFRNL solution and yours above however my custom column results is all Error.
Just to understand what is "Grouped" is that a text result? BTW I dont have a Grouped column.
Any thoughts?