ST_Collect_Agg
Signature
Parameters
ColumnOrName
required
Geometry column to aggregate.
Returns
Column
Multi-geometry representing the collection of all geometries in the column.
DataFrame aggregates
ST_Collect_Agg (Python)
Aggregate Function: Collect all geometries into a multi-geometry.
Aggregate Function: Collect all geometries into a multi-geometry.
Unlike ST_Union_Aggr, this function does not dissolve boundaries between geometries.
It simply collects all geometries into a MultiPoint, MultiLineString, MultiPolygon,
or GeometryCollection based on the input geometry types.
SQL reference: