Situation
There is no argument that VLOOKUP is a beautiful & useful formula. But it suffers from one nagging limitation. It cannot go left.
Let me explain, Imagine you have data like below. Now, if you want to find-out who made $2,133 in sales, there is no way VLOOKUP can come to rescue. This is because, once you search a list using VLOOKUP, you can only return corresponding items from the column at right, not at left.
Data:
One easy fix would be move the sales data to the left of person name. But this is an annoying fix, because, god knows you may want to lookup based on profit values or something else in future. A better alternative is,…
Solution
.., to use a formula combination called INDEX + MATCH (or OFFSET + MATCH would work too).
The basic syntax of this combination is like this: =INDEX(column with data you want,MATCH(value you are looking for, column which contains this data,0)). So, for eg: =INDEX($B$5:$B$17,MATCH(1088,$D$5:$D$17,0)) would find the position of 1088 in list D5:D17 and return corresponding element from B5:B17 (ie the value from left). See more examples below.
Examples:
Sample File
Download Example File – Make VLOOKUP go Left
Go ahead and download the file. It also has some homework for you to practice this formula trick.
Special Thanks to
Prem, Rohit1409, John, Godzilla, Chris Byham, judgepax – Please click on their names to learn even more.
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2 Responses to “Top 10 Power BI Interview Questions & Answers”
Hello...
In Power BI I have data that includes months by name only (e.g. May, April, December...)
I need to build charts etc. but i need the months to go chronologically... not alphabetically... I cannot seem to find the fix to this.... once again, my data does NOT have an actual date attached to it (like 02/01/2023)....only month names... can i use a helper table wher i id the month names as numbers 1 thru 12? and if so, how do i manage this to work for me ?
Thank you.
~Keith
You need to setup an extra table to map each month name to a running number. A simple 12 row table like
Jan 1
Feb 2
Mar 3
..
Dec 12
Then create a relationship between this month table and your month column
Now, go to "table view" in Power BI and set the sort by column to month number for the month name column on this new table.
Finally, use the new table's month name whenever you need to refer to the month name in the visuals.
They will be chronologically arranged.