为啥我在程序上收到 ERROR 1064 (42000) mysql 错误？

Posted 2023-05-09

【中文标题】为啥我在程序上收到 ERROR 1064 (42000) mysql 错误？

【英文标题】：Why am i getting ERROR 1064 (42000) mysql error on procedure?为什么我在程序上收到 ERROR 1064 (42000) mysql 错误？

【发布时间】：2016-05-18 15:42:33

【问题描述】：

我的 mysql 5.5 程序有什么问题？ 我正在尝试通过 linux 上的 mysql 客户端命令终端创建它。

    DELIMITER //
CREATE procedure merge()
BEGIN

  DECLARE old_outlet_id INT(10);
  DECLARE new_outlet_id INT(10);
  DECLARE gpid VARCHAR(255);
  DECLARE v_finished INTEGER DEFAULT 0;
  DEClARE cur CURSOR FOR select distinct google_place_id from service_providers_outlets group by google_place_id having count(google_place_id) > 1;
  DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_finished = 1;

  OPEN cur;


getC: LOOP

 FETCH cur INTO gpid;

 IF v_finished = 1 THEN 
 LEAVE getC;
 END IF;

     SET old_outlet_id = (select id from service_providers_outlets o where google_place_id = gpid order by created_on limit 1);
     SET new_outlet_id = (select id from service_providers_outlets o where google_place_id = gpid order by created_on desc limit 1); 

     select concat('old_outlet_id', old_outlet_id);
     select concat('new_outlet_id', new_outlet_id);

     if old_outlet_id != new_outlet_id then
         update reviews_completed set outlet_id = new_outlet_id where outlet_id = old_outlet_id;
         update service_providers_offers_outlet_link set outlet_id = new_outlet_id where outlet_id = old_outlet_id;
         update service_providers_offers_redeemed set outlet_id = new_outlet_id where outlet_id = old_outlet_id;
         update reviews_questions_outlet_link set outlet_id = new_outlet_id where outlet_id = old_outlet_id;
         delete from dashboard_users_outlet_link where outlet_id = old_outlet_id;
         delete from service_providers_outlets where id = old_outlet_id;
     end if;

 END LOOP getC;

 CLOSE cur;

END //
DELIMITER ;

我收到以下错误：

ERROR 1064 (42000)：您的 SQL 语法有错误；检查 与您的 MySQL 服务器版本相对应的手册 在 'o where google_place_id = '' order by created_on 附近使用的语法 限制 1); ew_outlet_id = (select' at line 22 mysql> DELIMITER ;

【参考方案1】：

尝试使用 max 和 min

SET old_outlet_id = (select max(id) from service_providers_outlets o where google_place_id = '' );
SET new_outlet_id = (select min(id) from service_providers_outlets o where google_place_id = '');