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-rw-r--r--contrib/spi/moddatetime.example27
1 files changed, 27 insertions, 0 deletions
diff --git a/contrib/spi/moddatetime.example b/contrib/spi/moddatetime.example
new file mode 100644
index 0000000..65af388
--- /dev/null
+++ b/contrib/spi/moddatetime.example
@@ -0,0 +1,27 @@
+DROP TABLE mdt;
+
+CREATE TABLE mdt (
+ id int4,
+ idesc text,
+ moddate timestamp DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+CREATE TRIGGER mdt_moddatetime
+ BEFORE UPDATE ON mdt
+ FOR EACH ROW
+ EXECUTE PROCEDURE moddatetime (moddate);
+
+INSERT INTO mdt VALUES (1, 'first');
+INSERT INTO mdt VALUES (2, 'second');
+INSERT INTO mdt VALUES (3, 'third');
+
+SELECT * FROM mdt;
+
+UPDATE mdt SET id = 4
+ WHERE id = 1;
+UPDATE mdt SET id = 5
+ WHERE id = 2;
+UPDATE mdt SET id = 6
+ WHERE id = 3;
+
+SELECT * FROM mdt;