Name
ST_SRID — Returns the spatial reference identifier of the raster as defined in spatial_ref_sys table.
Synopsis
integer ST_SRID(raster rast);
Descripción
Returns the spatial reference identifier of the raster object as defined in the spatial_ref_sys table.
![[Note]](../images/note.png)
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From PostGIS 2.0+ the srid of a non-georeferenced raster/geometry is 0 instead of the prior -1. |
Ejemplos
SELECT ST_SRID(rast) As srid
FROM dummy_rast WHERE rid=1;
srid
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0