[Qgis-user] linking n to 1 data
Matthias Kuhn
matthias at opengis.ch
Sun Jan 24 07:30:49 PST 2016
Hi,
There are a number of things to be done to properly support different
usecases:
*Join / Aggregate functions support in expressions*
Some sort of join possibility should be added to expressions (similar to
the get_feature function) and some aggregate functions. E.g.
join( "otherlayer"."name", ',' ) RIGHT JOIN otherlayer ON
otherlayer."id" = this."fk"
to create a string like "A,B,C" from three linked entries with name A, B
and C.
Or
average( "otherlayer"."population" ) RIGHT JOIN otherlayer ON
otherlayer."id" = this."fk"
etc...
*Relation support for print composer*
Create tables with information from related entries based on the current
atlas feature.
Other ideas? I'm sure there is a lot more to be done :-)
Matthias
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20160124/db5c6812/attachment.html>
More information about the Qgis-user
mailing list