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How to replace null values with a looked up value from another table?

Hi there, my first time on the site and posting 🙂


I'm a beginning user of power query and stuck in a situation where after joins from previous tables and transformations, my combined data set has some records where their Level 4 director didn't join/resolve because they are new employees and aren't in the monthly table yet.


Level 4 DirectorResource Name
Vivek MallinaPraneeth Pasam
nullSamir Ulavapalli
Vivek MallinaTushar Banthia
Paulo MerrittTina Somburanasin
nullLisa Shankar


... I've used a reference query to show me the names of the resources who's names aren't resolving to a Level 4 Director, and I was thinking of creating a separate table to serve as a lookup for replacing the null above, reading something like...


Resource NameLevel 4 Director
Samir UlavapalliVivek Mallina
Lisa ShankarVivek Mallina I could use some M-Code or something like it to lookup the null's from the earlier table and end up with these "overridden" values so I don't have null's:


Level 4 DirectorResource Name
Vivek MallinaPraneeth Pasam
Vivek MallinaSamir Ulavapalli
Vivek MallinaTushar Banthia
Paulo MerrittTina Somburanasin
Vivek MallinaLisa Shankar

...and help or hints would be GREATLY appreciated!

Super User
Super User

NewStep=Table.ReplaceValue(PreivousStepName,each [Resource Name],"",(x,y,z)=>ReferenceTable{[#"Resource Name"=y]}?[Level 4 Director]? ??x,{"Level 4 Director"})

Not applicable

Thank you wdx223_Daniel! I'll try it out right away!

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