[riskneutral]

I strongly agree, having worked quite a bit in several languages including Python/NumPy/Pandas, MATLAB, C, C++, C#, even Perl ... I am not sure about Julia, but last time I looked at it, the language designers seemed to be coming from a MATLAB type domain (number crunching) as opposed to an R type domain (data crunching), and so Julia seemed to have a solid matrix/vector type system and syntax, but was missing a data.table style type system / syntax.

[ChrisRackauckas]

Julia v0.7-alpha dropped and it has a new system for missing data handling. JuliaDB and DataFrames are two tabular data stores (the first of which is parallel and allows out-of-core for big data). This has changed pretty dramatically over the last year.