1 files changed, 30 insertions, 0 deletions
diff --git a/contrib/lo/sql/lo.sql b/contrib/lo/sql/lo.sql
new file mode 100644
index 0000000..7703950
--- /dev/null
+++ b/contrib/lo/sql/lo.sql
@@ -0,0 +1,30 @@
+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;