Google for "one to many relation". You should find something in the project
> Le 1 nov. 2016 à 16:15, Jeffrey.Rhodes [via OSGeo.org]
> <ml-node+s1560n529382...@n6.nabble.com> a écrit :
> I was using QGIS to set up a new information/navigation system for my
> university, when I came across this problem:
> I got different data sets from different sources, one that has all the
> buildings in it , and one with specific rooms in buildings.
> When I tried to fuse the two data sets I had the problem that one list has
> multiple entries per adress/building (multiple noticeable rooms in a
> building), while the other only had one entry per building, for the basic
> building geometry. Upon connecting them it always only connected the first
> entry in the room list to the building, ignoring the others.
> Is there any way or plug in to fix that? E.g. Something to create multiple
> entries of the houses table, or put the rooms into multiple columns for each
> Thanks in advance
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