[ANN] A new lightning fast package for data manipulation in pure Julia

[DataFrames]

@Honarvaghtan

but there are some incorrect rows in the output, though it works fine for MWE, any idea?

Your program produces incorrect results for rows where :v1 is missing, use

julia> byrow(df, isless, [:v1, :v2, :v3], with = byrow(df, coalesce, :), lt = f)