CREATE TABLE LOCATION (
LOCID VARCHAR2(5)
, MINQTY NUMBER
, MAXQTY NUMBER
, PRIMARY KEY (LOCID)
, CONSTRAINT CHECK_LOCID_LENGTH CHECK (LENGTH(LOCID) = 5)
, CONSTRAINT CHECK_MINQTY_RANGE CHECK (MINQTY BETWEEN 0 AND 999)
, CONSTRAINT CHECK_MAXQTY_RANGE CHECK (MAXQTY BETWEEN 0 AND 999)
, CONSTRAINT CHECK_MAXQTY_GREATER_MIXQTY CHECK (MAXQTY >= MINQTY)
);
CREATE OR REPLACE PROCEDURE ADD_LOCATION_TO_DB(ploccode VARCHAR2, pminqty NUMBER, pmaxqty NUMBER) AS
BEGIN
INSERT INTO location(locid, minqty, maxqty) VALUES (ploccode, pminqty, pmaxqty);
EXCEPTION
WHEN DUP_VAL_ON_INDEX THEN
RAISE_APPLICATION_ERROR(-20081, 'Duplicate Location ID');
WHEN OTHERS THEN
RAISE_APPLICATION_ERROR(-20086,sqlerrm);
END;
我用约束创建了上表。现在我想通过在异常中捕获它们来测试 PL/SQL 过程中的这些约束。但我很困惑如何去做。