Hi,
On Tue, 2004-11-02 at 07:47, Katsaros Kwn/nos wrote:
> Hi!
>
> I want to parse a query (SFW) and create new queries: one for each
> table referenced, if that possible.
> I've written a function for this in the Query struct level after
> parse&rewrite (not very general ofcourse :-)) but I would like to
> know whether there is any code written for this purpose at any level.
> Are there any algorithms for this?
> Following, is there any code or at least some algorithm about merging
> the individual results returned from these queries?
The latter is easy. Consider:
SELECT ... FROM
(SELECT ... first query here) AS table_a
JOIN
(SELECT ... second query here) AS table_b
USING (same_column);
(or ON table_a.column = table_b.column)
I dont think you should think about joining results
outside the database. You have Postgresql here, remember :-)
Regards
Tino