postgresql/contrib/lo/sql/lo.sql

31 lines
656 B
SQL

CREATE EXTENSION lo;
CREATE TABLE image (title text, raster lo);
CREATE TRIGGER t_raster BEFORE UPDATE OR DELETE ON image
FOR EACH ROW EXECUTE PROCEDURE lo_manage(raster);
SELECT lo_create(43213);
SELECT lo_create(43214);
INSERT INTO image (title, raster) VALUES ('beautiful image', 43213);
SELECT lo_get(43213);
SELECT lo_get(43214);
UPDATE image SET raster = 43214 WHERE title = 'beautiful image';
SELECT lo_get(43213);
SELECT lo_get(43214);
-- test updating of unrelated column
UPDATE image SET title = 'beautiful picture' WHERE title = 'beautiful image';
SELECT lo_get(43214);
DELETE FROM image;
SELECT lo_get(43214);
DROP TABLE image;