Question

我有一个存储过程，它更新两个表，然后将一行插入第三个表。（根据我的理解，回滚更新或插入，如果所有三个都无法完成）无论如何，无论何时我运行此程序，无论它是否最终成功运行两个更新并插入或不插入，它将始终“成功”并且返回false。我需要它返回一个值（可能是真的），如果它成功完成所有两个更新和一个插入，如果没有则返回false，这样我就可以在服务器端进行正确的错误检查。

以下是程序：

CREATE DEFINER=`db1`@`%` PROCEDURE `completed_procedure`(IN insubmissionid INT)
BEGIN

DECLARE ingregid INT;
DECLARE EXIT HANDLER FOR SQLEXCEPTION ROLLBACK;
DECLARE EXIT HANDLER FOR SQLWARNING ROLLBACK;

START TRANSACTION;

SET @ingregid = (SELECT idgreg FROM submission WHERE idsubmission = insubmissionid);

UPDATE submission SET status='a' WHERE idsubmission = insubmissionid;

UPDATE greg SET iscomplete=1 WHERE idgreg = @ingregid;

INSERT INTO completion (idperson, idgreg, datecompleted, idsubmission, mediaid, description,
    privatestatus, contenttype, totalamount)  
SELECT s.idperson, s.idgreg, s.datesubmitted, s.idsubmission,
    COALESCE(s.youtubeid, s.contentid) AS mediaidid, g.description, g.privatestatus,
    g.contenttype, COALESCE(SUM(amount),0) AS totalamount 
FROM submission s 
INNER JOIN greg g on s.idgreg = g.idgreg
INNER JOIN contribution c on s.idgreg = c.idgreg 
WHERE s.idsubmission = insubmissionid AND c.ispaid = 1;

COMMIT;
END

最好的方法是什么？

Answer 1

你可以返回一个值，这是一个例子。

 CREATE DEFINER=`db1`@`%` PROCEDURE `completed_procedure`(IN insubmissionid INT, OUT success INT
BEGIN

IF (   CONDITION  ) THEN
    SET success = 1;
ELSE
    SET success = -1;
END IF;
SELECT success ;

COMMIT;
END

如何判断mysql存储过程是否成功执行

1 个答案: