I need to create a trigger that increment a value in a column
of table1 where a row is inserted in table 2
I have tried whit this but it just does nothing.
CREATE FUNCTION increment_value () RETURNS opaque AS
'DECLARE code int4; BEGIN code := new.code; UPDATE table1 SET value = value + 1 WHERE id = code;
RETURN NEW;
END;' LANGUAGE 'plpgsql';
CREATE TRIGGER insert_on_table2 BEFORE INSERT ON table2 FOR EACH ROW EXECUTE PROCEDURE increment_value();
Can you help me?
