I'm now quite ready to release SpatiaLite v2.3
Unhappily, during this week I'm absolutely required
to attend a critical task for a different project,
this causing some further delay for SpatiaLite
Anyway, v2.3-beta is available for download at:
http://www.gaia-gis.it/spatialite-2.3
There are yet some testing to be done, some minor fix
is still required, and the docs are pitifully out-of-sync;
but the main core is available
BTW, this including aggregate SQL function GUnion()
SELECT featureid,GUnion(the_geom) as the_geom
FROM user_area_features
GROUP BY featureid
bye,
Sandro