[Haskell-cafe] Relational Algebra library: first version on GitHub

Ertugrul Söylemez es at ertes.de
Sun Jul 22 05:24:37 CEST 2012

Hello there Paul,

Paul Visschers <mail at paulvisschers.net> wrote:

> A couple of weeks ago I asked if there was interest in a library that
> implements a type-safe relational algebra. The response was positive,
> so I have spruced up the code I had a bit and created a repository on
> GitHub at:
> https://github.com/PaulVisschers/relational-algebra
> It is a very rudimentary version. The code is not documented and there
> is only a very basic example database in Test.hs. It might be helpful
> to look at HaskellDB's PrimQuery and PrimExpr, as this library is
> mostly a direct copy from that (but typed). I will add some decent
> examples of expressions and queries shortly.
> If you check it out, please comment on it and let me know if you want
> to contribute. Since this is going to be my first release, any
> feedback is welcome.

Well, the demonstration could be a bit more comprehensive.  I would be
very interested in seeing queries, especially nontrivial ones with joins
and such.

Would you mind writing a more comprehensive demonstration?


Not to be or to be and (not to be or to be and (not to be or to be and
(not to be or to be and ... that is the list monad.
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