Question

以下存储过程按预期工作但是如果我强制发生错误（请参阅INSERT语句中的故意类型-o）我没有得到任何错误信息。

我创建了一个名为error_check的表，并尝试在其中插入错误信息以查看是否可以获取更多信息，但是当出现错误时，表中没有添加任何行。（当我取出类型-o时，我得到一个新的行，其中包含空值，如预期的那样。）

这曾经有用，所以我确定这是我错误添加的内容。

CREATE DEFINER=`root`@`localhost` PROCEDURE `addClassToMasterList`( IN begin_date VARCHAR(10), IN day_num INT,
                               IN startTime VARCHAR(10), IN endTime VARCHAR (20), IN loc_id INT, IN studio VARCHAR(20),
                               IN class_name VARCHAR(45), IN owner_id INT,
                               IN club_id INT, OUT return_id VARCHAR(250))
BEGIN

DECLARE EXIT HANDLER FOR SQLEXCEPTION, NOT FOUND, SQLWARNING
BEGIN
    ROLLBACK;  
    GET DIAGNOSTICS CONDITION 1 @sqlstate = RETURNED_SQLSTATE, 
                                @errno = MYSQL_ERRNO, 
                                @text = MESSAGE_TEXT;
    SET @display_error = CONCAT("ERROR ", @errno, " (", @sqlstate, "): ", @text);
END;   /*end of exception handing*/

SET @formatted_date = STR_TO_DATE(begin_date, '%m/%d/%Y');

/* Save all data as a new row in the Master Schedule */
INSERT INTO master_class_list_typeo_here
VALUES (null, 
    day_num, 
    @formatted_date, 
    null,
    startTime, 
    endTime, 
    loc_id, 
    studio,
    class_name, 
    owner_id, 
    club_id); 

SELECT LAST_INSERT_ID() INTO @new_id;

/* Put bits of error into a table so I can see what is going on. */
INSERT INTO error_check
VALUES (null, @display_error, @text, @errno);

/* If an error message was generated, return the error.
   Otherwise, return the new id that was automatically created. */
SELECT IF (@display_error, @display_error, @new_id) INTO return_id;
/* Also tried:  SELECT @display_error INTO return_id;  */

END

Answer 1

尝试：

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GET STACKED DIAGNOSTICS CONDITION 1
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13.6.7.3 GET DIAGNOSTICS Syntax

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关键字STACKED表示从第二个检索信息   诊断区域，仅在当前上下文为a时可用   条件处理程序。

...

请参阅db-fiddle。

mySQL存储过程没有给我错误消息

1 个答案: