Forum Discussion
How to apply VLOOKUP in Power Query editor?
Hi Anonymous ,
In Power Query functions can be created like this:
(lookupValue as any, lookupTable as table, lookupColumnName as text, returnColumnValue as text) => let // lookupTable= Products, // lookupColumnName = "ProductKey", // returnColumnValue = "Price", // lookupValue = 1, colLookup = Table.Column(lookupTable, lookupColumnName), colToReturn = Table.Column(lookupTable, returnColumnValue), lookup = List.PositionOf(colLookup, lookupValue, 0), Result = if lookup >=0 then colToReturn{lookup} else "Not found" in ResultOr
You can duplicate your query and merge the two queries to get the desired columns.
Disable the load from the duplicate one to avoid performance issues.
Please refer to the following documents for more information.
#PowerQuery – Replicate doing an Excel VLOOKUP in M – Erik Svensen
How to do a real VLOOKUP (false) in Power Query or Power BI – The BIccountant
VLOOKUP / XLOOKUP in Power Query - Bing video
VLOOKUP in Power Query Using List Functions - Bing video
Best Regards,
Neeko Tang
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Advocate III was trying to do this all in M code - because I didn't want to make the actual table and then join ... wanted it all in the M query (Advanced editor). **My lookup table has no duplicates (in fact, there's a step to remove duplicates just to be sure. If there were duplicates, the code below would not be perfect.
I landed with this code that is working:
CombinedTable = Table.AddColumn(TableAlmostDone, "UserResponsible_StaffKey", each DimMarketStaff[StaffKey]{List.PositionOf(DimMarketStaff[StaffName], [UserResponsible])}),
FinalTable = Table.ReplaceErrorValues(CombinedTable, {{"UserResponsible_StaffKey", 0}})- TableAlmostDone is the FactTable that I'm building
- DimMarketStaff is like a temp table in my M code that just has the StaffKey and StaffName
- The Fact table has the staffName, but not the Key ... so - this code uses the StaffName from the FactTable to lookup the Key on the Dimension table. (because the Power Apps developer has the name on the Fact Table)