Minor update Chapter 17

This commit is contained in:
anthonydb 2021-05-16 14:55:38 -04:00
parent 013c40062c
commit 3a639a5942

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@ -270,7 +270,7 @@ BEGIN
OLD.grade, OLD.grade,
NEW.grade); NEW.grade);
END IF; END IF;
RETURN NEW; RETURN NULL;
END; END;
$$ LANGUAGE plpgsql; $$ LANGUAGE plpgsql;