Hello,

On Thu, Oct 29, 2009 at 2:24 PM, Meikel Brandmeyer <m...@kotka.de> wrote:
> On Oct 29, 1:15 pm, Miron Brezuleanu <mbr...@gmail.com> wrote:
>> Cons: I'm afraid of getting the SQL generating syntax wrong and making
>> the data structures used for generation ugly. But I guess that can be
>> fixed by iterating a little. :-)
>
> ClojureQL[1] does that to some extent. Currently MySQL and Derby are
> supported as backends, Postgres to some extent (so it has issues,
> IIRC). The generation part consists of multimethods "compiling" the
> defined queries into JDBC PreparedStatements. Up to now we managed to
> hide the backend as much as possible, but the feature set of ClojureQL
> is still limited. So my suspicion is that the backend will leak
> through eventually... But we'll see.
>
> Nice effect: ClojureQL allows FULL JOINs with a Derby backend. Derby
> does not support FULL JOIN.

... and I bet Derby doesn't have macros either :-)

Actually, what I need appears to be different from ClojureQL. It turns
out the Clojure datastructure to be rendered as TSQL still needs to be
readable to someone who knows TSQL, so I need to be closer to the
backend. The main advantages I'm after right now are eliminating
repetitions (define a table variable with a list of fields, select
into that table by specifying the list of fields again etc. - such
lists of fields or table variable definitions end up being repeated a
lot.) and generally factoring out common things (which is hard to do
in TSQL - for instance because it's not that strong in the type
definition area).

Anyway ClojureQL is very nice and I'll consider it for other projects.

Thanks,
-- 
Miron Brezuleanu

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