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Inserting images into a table that contains an ST_Raster column

To insert raster data into a raster column of type ST_Raster, you must provide an appropriate data source. Unless the data source is from another ST_Raster column, it must be converted to the ST_Raster type's format. The conversion is accomplished with the ST_Raster constructor.

The ST_Raster constructor accepts two possible data sources: a TIFF file or an ST_PixelData object.

Shown below are the SQL INSERT statements with the three possible data sources for each of the three supported database management systems.

Inserting raster values from one ST_Raster column into another

  1. Insert the results of a query of an existing ST_Raster column into another ST_Raster column.

    Oracle

    INSERT INTO URBAN_AREA (RASTER,NAME) 
SELECT RASTER,'BOSTON' 
FROM BOSTON_AREA;

    PostgreSQL

    INSERT INTO urban_area (raster) 
SELECT raster 
FROM boston_area;

    SQL Server

    INSERT INTO urban_area (raster) 
SELECT raster 
FROM boston_area;

Converting a TIFF file to an ST_Raster

  1. Convert a TIFF file to ST_Raster type using the ST_Raster constructor and insert it into an ST_Raster column.

    Oracle

    INSERT INTO URBAN_AREA 
VALUES(SDE.ST_RASTER('C:\milwakee.tif','compression=lz77');

    PostgreSQL

    INSERT INTO urban_area 
VALUES (st_raster('C:\milwaukee.tif','compression=lz77));

    SQL Server

    INSERT INTO urban_area 
VALUES(st_raster::construct('C:\milwaukee.tif',NULL,'compression=lz77'));

Converting an ST_PixelData value to ST_Raster

  1. Convert an ST_PixelData value to an ST_Raster value using the ST_Raster constructor and insert it into an ST_Raster column.

    Oracle

    DECLARE
data SDE.ST_PIXELDATA;
BEGIN
SELECT t.raster.getPixelData('level=1') INTO DATA FROM ALANTA
t;
INSERT INTO URBAN_AREA
VALUES (sde.st_raster(data, 'compression=lz77'));
END;
/

    PostgreSQL

    DROP FUNCTION IF EXISTS insert_pixeldata();
CREATE OR REPLACE FUNCTION insert_pixeldata()
RETURNS void AS '
DECLARE data st_pixeldata;
BEGIN 
 SELECT getPixelData(image, 'level=1' ) 
 INTO data 
 FROM atlanta;
 INSERT INTO urban_area
 VALUES
 (st_raster(data,''compression=lz77''));
END;'
LANGUAGE plpgsql;
SELECT insert_pixeldata();
 DROP FUNCTION IF EXISTS
insert_pixeldata();

    SQL Server

    DECLARE
@data ST_Pixeldata;
SET @data =
(SELECT image.getPixelData('level=1') FROM atlanta);
 INSERT INTO urban_area
 VALUES (ST_Raster::construct(NULL, @data,
 'compression=lz77'));

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