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我在更新 mysql 表时遇到问题。虽然这个问题看起来有些奇怪，但我在下面解释它。

我正在处理用户的配置文件更新，其中来自单个表单的数据正在插入/更新到两个不同的表，但是如果我更新整个表单信息，则更新数据是成功的，但如果我只更新一些 2 或 3 个字段，则更新失败。我正在使用mysql存储过程进行sql更新，代码如下...

DELIMITER $$

DROP PROCEDURE IF EXISTS `usp_user_profile_save` $$
CREATE PROCEDURE `usp_user_profile_save`(IN sIntro_para VARCHAR(255), IN sBook VARCHAR(255), IN sProfileNewName VARCHAR(255),
IN iRel VARCHAR(255), IN iBdate VARCHAR(255), IN iSO INT, IN iMerital_status INT, IN iChildren INT, IN iProfession INT,
IN iIncome INT, IN iIncome_unit INT, IN iCountry INT, IN iState INT, IN iCity_or_post_code INT, IN iHeight VARCHAR(255), IN iSp INT, IN iEthnicity INT,
IN iHair_color INT, IN iHair_lenght INT, IN iEye_color INT, IN iSmoker_or_not INT, IN iUserId INT)
BEGIN
DECLARE n,n1,respCode INT;
DECLARE respMsg,dbg VARCHAR(255);

  START TRANSACTION;

  UPDATE `tbl_user` SET
    `introduction` = sIntro_para,
    `profile_picture` = sProfileNewName,
    `birthdate` = iBdate,
    `s_o` = iSO,
    `marital_status` = iMerital_status,
    `children` = iChildren,
    `profession` = iProfession,
    `income` = iIncome,
    `income_unit` = iIncome_unit,
    `my_book` = sBook,
    `r_s` = iRel,
    `counrty` = iCountry,
    `state` = iState,
    `city` = iCity_or_post_code,
    `modified` = NOW(),
    `modified_by` = iUserId
  WHERE `id` = iUserId;
  SET n = ROW_COUNT();

  IF n <= 0 THEN
    ROLLBACK;
  ELSE

    IF EXISTS (SELECT * FROM `tbl_user_physical` WHERE `tbl_user_id` = iUserId) THEN
      UPDATE `tbl_user_physical` SET
        `tbl_user_id` = iUserId,
        `height` = iHeight,
        `shape` = iSp,
        `ethnicity` = iEthnicity,
        `hair_color` = iHair_color,
        `hair_length` = iHair_lenght,
        `eye_color` = iEye_color,
        `smoker_or_non_smoker` = iSmoker_or_not
      WHERE `tbl_user_id` = iUserId;
      SET n1 = ROW_COUNT();

    ELSE
        INSERT INTO `tbl_user_physical`(`tbl_user_id`, `height`, `shape`, `ethnicity`, `hair_color`, `hair_length`, `eye_color`, `smoker_or_non_smoker`) VALUES (iUserId, iHeight, iSp, iEthnicity, iHair_color, iHair_lenght, iEye_color, iSmoker_or_not);
        SET n1 = LAST_INSERT_ID();
    END IF;

    IF n1 > 0 THEN
      COMMIT;
        SELECT 1 AS respCode, 'Registration successfull.' AS respMsg;
    ELSE
        ROLLBACK;
        SELECT 0 AS respCode,'Registration couldn\'t be completed.' AS respMsg, n, n1;
    END IF;
  END IF;

END $$

DELIMITER;

虽然我用不同的关键字搜索了我的问题很多次，但我没有找到与我相关的问题，我已经正确编写了更新声明，但它没有更新，因为大多数将要更新的新数据与旧数据相同，我的前辈说我只有在提交和使用一组新数据的情况下更新才有效..

所以，请帮我解决这个问题提前谢谢..

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1 回答 1

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我最近知道UPDATE如果我们更新相同的数据，该语句会返回错误。因此，我更新了添加新列modified_date并更新了此字段，NOW()以便至少更改一列并且UPDATE语句不返回错误。

于 2012-10-02T07:03:50.797 回答