How do I combine data from two tables based on certain shared values from the row?
I already tried using the which function and it didn't work.
Using dplyr correctly to combine shared values of a row to a new column of a table
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I think you will have the best luck using the dplyr fuction. Specifically you can use right_join(). You can wright it like this, right_join(df1,df2, by="specification")
This will combine that columns from df2 with the specifications matching the rows according to the shared specification from df1.
For future reference it would be a lot of help if you included a screenshot of code just so it is easier to know exactly what you are asking.
Anyway, let me know if this answers your question!