st_union
How PostGIS Raster runs Mosaic: st_union.
| Engine | PostGIS Raster |
|---|---|
| Tool name | st_union |
| Interface | sql |
| Implements | Mosaic |
| Documentation | Not stated |
| Effects | modifies input: no, network: no |
| Notes | Has an aggregate form. |
| Status | active |
Parameters
Not stated
SQL overloads
-
st_union(raster) → raster (aggregate) -
st_union(raster, integer) → raster (aggregate) -
st_union(raster, integer, text) → raster (aggregate) -
st_union(raster, text) → raster (aggregate) -
st_union(raster, unionarg[]) → raster (aggregate)
How it maps to the operation
| Operation parameter | Parameter here | Note |
|---|---|---|
rasters | #1 | Not stated |
Differences from the operation
- An aggregate over raster rows; uniontype (LAST by default) chooses the value where tiles overlap.
Harvested by the postgis harvester from engine version
3.7.0. Names can change when an engine is harvested again.