SDO_GEOR.getLayerID

Format

SDO_GEOR.getLayerID(
     georaster   IN SDO_GEORASTER,
     layerNumber IN NUMBER
     ) RETURN VARCHAR2;

Description

Returns the user-defined identifier value associated with a layer in a GeoRaster object.

Parameters

georaster

GeoRaster object.

layerNumber

Number of the layer for which to return the user-defined identifier value. A value of 0 (zero) indicates the object layer.

Usage Notes

To set a user-defined identifier value for a layer in a GeoRaster object, use the SDO_GEOR.setLayerID procedure.

Examples

The following example returns the user-defined identifier values of layers 0, 1, 2, and 3 of the GeoRaster object (GEORASTER column) in the row with the GEORID column value of 4 in the GEORASTER_TABLE table, whose definition is presented after Example: Using storageParam Keywords in Storage Parameters.

SELECT substr(sdo_geor.getLayerID(georaster, 0),1,12) layerID0,
       substr(sdo_geor.getLayerID(georaster, 1),1,12) layerID1,
       substr(sdo_geor.getLayerID(georaster, 2),1,12) layerID2,
       substr(sdo_geor.getLayerID(georaster, 3),1,12) layerID3
  FROM georaster_table WHERE georid=4;

LAYERID0     LAYERID1     LAYERID2     LAYERID3
------------ ------------ ------------ ------------
TM543        TM3          TM4          TM5