db2level：v8.1 fixpack 4

在存储过程中，IF判断路径错误，2居然等于1，来看看吧：

CREATE PROCEDURE ptestif()
LANGUAGE SQL
BEGIN
    DECLARE v_level integer DEFAULT 2;
   
    IF v_level = 1 THEN
        SIGNAL SQLSTATE '80001' SET MESSAGE_TEXT = '2 = 1? This Is A Bug!';
    ELSEIF v_level IN (3, 2) THEN
    END IF;

END
@

CALL  ptestif@