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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
commit46651ce6fe013220ed397add242004d764fc0153 (patch)
tree6e5299f990f88e60174a1d3ae6e48eedd2688b2b /contrib/lo/sql
parentInitial commit. (diff)
downloadpostgresql-14-46651ce6fe013220ed397add242004d764fc0153.tar.xz
postgresql-14-46651ce6fe013220ed397add242004d764fc0153.zip
Adding upstream version 14.5.upstream/14.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'contrib/lo/sql')
-rw-r--r--contrib/lo/sql/lo.sql30
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;