[postgis-users] Building Heirarchical Topology

[Paul Ramsey]

> On Feb 8, 2023, at 11:44 AM, Regina Obe <lr at pcorp.us> wrote:
> 
> TopoElementArray_Agg(elm)

Since I have you here: why a "topoelementarray" and not just a topoelement[] (a normal PgSLQ array of topoelement?) 

If topoelements are no good for building the inputs of topogeoms, what are they good for? This other ARRAY[(topo).id,(topo).layer_id] seems more useful...

P