7.52 SDO_GEOR.getCompressionType

Format

SDO_GEOR.getCompressionType(
     georaster  IN SDO_GEORASTER 
     ) RETURN VARCHAR2;

Description

Returns the compression type for a GeoRaster object.

Parameters

georaster

GeoRaster object.

Usage Notes

This function can return DEFLATE, JPEG-F, or NONE (the latter value meaning that the GeoRaster object is not compressed). For information about GeoRaster compression, see Compression and Decompression.

Examples

The following example returns the compression type for the GeoRaster objects (GEORASTER column) in the GEORASTER_TABLE table, whose definition is presented after Example 1-1 in Storage Parameters.

SELECT georid, substr(sdo_geor.getCompressionType(georaster),1,20) compressionType
  FROM georaster_table;

    GEORID COMPRESSIONTYPE
---------- --------------------
         2 DEFLATE
         4 JPEG-F