fslaborg / Deedle

Easy to use .NET library for data and time series manipulation and for scientific programming
http://fslab.org/Deedle/
BSD 2-Clause "Simplified" License
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Implement join by an arbitrary column #377

Open oxffaa opened 6 years ago

oxffaa commented 6 years ago

At the current moment, we can join two frames through indexes using Deedle. But often need to join two data frames with relations many-to-many or one-to-many. I tried solutions like grouping, processing outside Deedle and other, but all it is very not comfortable. I think that the best solution it is having something like

conferences |> Frame.joinBy "conferences_id" registrations