Using VLOOKUP to return one value from multiple columns . Scenario on hand: We have a fictional dataset of books with their release year, author name, and first-year sales. What we want to accomplish: ...

I'm pretty new to sequelize so I might be doing something wrong here. I'm on 2.0.5, using MySQL. Trying to make an index on multiple columns in Recording, 2 columns being in Recording, 1 column being ...

This PR introduces the notion of a **key** in a Frame: ``` frame.key = "colA" # set to a name or an index of a column assert frame.key == ("colA", ) ``` * Currently, only a single column can be used ...