PostGIS ST_SRID Prev 10.4. Raster Accessors Next Name ST_SRID — Returns the spatial reference identifier of the raster as defined in spatial_ref_sys table. Synopsis integer +`*`+ST_SRID*(`raster `rast`)`; Description Returns the spatial reference identifier of the raster object as defined in the spatial_ref_sys table. From PostGIS 2.0+ the srid of a non-georeferenced raster/geometry is 0 instead of the prior -1. Examples SELECT ST_SRID(rast) As srid FROM dummy_rast WHERE rid=1; srid ---------------- 0 See Also Section 4.5, “Spatial Reference Systems”, ST_SRID Prev Up Next ST_SkewY Home ST_Summary
