我正在尝试创建一个过程，该过程将获取一个由数千条记录组成的视图表，并根据各种条件删除多条记录来对其进行过滤。
当我尝试使用调用来运行它时，它会继续加载，根据whm panel，这个进程（phpmyadmin/import.php）占用了大约90%的cpu资源。最终，可能在10分钟后由于超时而失败：
静态分析：
分析中发现1处错误。
缺少表达式(位置25处“开”附近）sql查询：编辑
设置外键\u checks=on；
mysql说：文档

2006年的今天，mysql服务器消失了

我使用以下代码，新的视图表使用3个db表： vw_r2_items_tr ，正在使用 tr db核心表和 vw_items -使用 items 以及 visits 核心表

DELIMITER $$
CREATE VIEW `vw_r2_items_tr` AS 
SELECT
  IF((`i`.`id` = `t`.`item_ord`),1,0) AS `has_tr`,
  `i`.`calculated_score`   AS `calculated_score`,
  `i`.`visited_at`         AS `visited_at`,
  `i`.`ip_address`         AS `ip_address`,
  `i`.`user_id`            AS `user_id`,
  `i`.`visit_id`           AS `visit_id`,
  `i`.`product_id`         AS `product_id`,
  `i`.`name`               AS `name`,
  `i`.`id`                 AS `id`,
  `i`.`item_no`            AS `item_no`,
FROM (`vw_items` `i`
   LEFT JOIN `trs` `t`
     ON (((`t`.`visit_id` = `i`.`visit_id`)
          AND (`t`.`item_ord` = `i`.`id`))))$$
DELIMITER ;
DELIMITER $$
CREATE PROCEDURE `vw_unique_trs2`()
BEGIN
SET @vat=0;
SET @ht=0;
SET @tdiff=0;
-- EXPLAIN  
SELECT 
COUNT(*) AS ct, 
tb1.* FROM (SELECT it.*, @tdiff:=UNIX_TIMESTAMP(CONVERT_TZ(it.visited_at,'+00:00',@@global.time_zone)) AS tdiffs,
IF(@vat > 0 AND ((@vat-@tdiff) < 28800 AND (@vat-@tdiff) > -28800),@vat DIV 28800, @tdiff DIV 28800) AS diff,
@ht:=(IF(@vat > 0 AND ((@vat-@tdiff) < 28800  AND (@vat-@tdiff) > -28800),@ht+has_tr,has_tr)) hts,
@vat:=(IF(@vat > 0 AND ((@vat-@tdiff) < 28800 AND (@vat-@tdiff) > -28800),@vat,@tdiff)) curr_vat
FROM (SELECT * FROM (SELECT * FROM `vw_r2_items_tr` ORDER BY has_tr DESC, item_no, visited_at) AS tb
GROUP BY `tb`.`visit_id`,`tb`.`product_id`) AS it 
ORDER BY has_tr DESC, it.visited_at DESC
) AS tb1
GROUP BY user_id, calculated_score, diff, hts;
END$$
DELIMITER ;