Format

SDO_GEOR.deletePyramid(
     georaster     IN OUT SDO_GEORASTER,
     pyramidLevel  IN NUMBER DEFAULT NULL);

Description

Deletes the pyramid data of a GeoRaster object from the given pyramid level and above.

Parameters

georaster

GeoRaster object for which pyramid data is to be deleted.

pyramidLevel

The level of pyramid (and above) for which to delete pyramid data. By default, all the pyramid data is deleted.

Usage Notes

For information about pyramid data, see Pyramids.

If georaster is null or has no pyramid data, this procedure performs no operation.

An exception is raised if georaster is invalid or if the value of pyramidLevel is less than 1.

Examples

The following example deletes the pyramid data for a GeoRaster object. (It refers to a table named GEORASTER_TABLE, whose definition is presented after Example 1-1 in Storage Parameters.)

DECLARE
  gr1 sdo_georaster;
BEGIN
  SELECT georaster INTO gr1 FROM georaster_table WHERE georid=21;

  sdo_geor.deletePyramid(gr1);
  UPDATE georaster_table SET georaster=gr1 WHERE georid=21;
  COMMIT;
END;
/

The following example deletes the pyramid data for a GeoRaster object where the pyramid level is greater than or equal to 3. (It refers to a table named GEORASTER_TABLE, whose definition is presented after Example 1-1 in Storage Parameters.)

DECLARE
  gr1 sdo_georaster;
BEGIN
  SELECT georaster INTO gr1 FROM georaster_table WHERE georid=21;

  sdo_geor.deletePyramid(gr1, 3);
  UPDATE georaster_table SET georaster=gr1 WHERE georid=21;
  COMMIT;
END;
/