What package let’s you read a file using a “select=columnnames” option to select the columns you want?
The examples I’ve seen so far do read all columns and makes selection later.
df = CSV.File(“cool_file.csv”) |> select(:a, :b) |> DataFrame
This doesn’t seem efficient and won’t alloy you to read files larger than memory.
or
f = CSV.File(file)
for row in f
println(“a=(row.a), b=(row.b)”)
end
Is there an option on any Julia package to read only the desired columns?