MySQL索引停止工作

Question

我正在新闻网站上工作，表（新闻）包含大约200,000行。 我使用Zend框架1。 该网站运行良好，但从一周前，我发现从查询中检索数据有一些错误。

我使用zend paginator，就像这样：

 $paginator = Zend_Paginator::factory($select);
 $paginator->setItemCountPerPage(10);
 $pageCounter = $paginator->count();

所以$ pageCounter返回0，

当我尝试调试错误时，我试图从数据库表中删除索引并再次创建索引，然后问题解决了网站重新开始工作。 但每隔几天这个问题又回来了。 我使用的表是：

    CREATE TABLE `news` (
 `news_id` int(11) NOT NULL AUTO_INCREMENT,
 `category_id` int(11) DEFAULT NULL,
 `news_type` enum('text','photo','video') DEFAULT 'text',
 `news_title` varchar(255) NOT NULL,
 `news_url` varchar(255) NOT NULL,
 `news_date` datetime NOT NULL,
 `news_image` varchar(255) DEFAULT NULL,
 `video` varchar(255) DEFAULT NULL,
 `news_source` int(11) NOT NULL DEFAULT '0',
 `author_id` int(11) NOT NULL DEFAULT '0',
 `news_brief` text,
 `news_content` mediumtext,
 `meta_title` varchar(255) NOT NULL,
 `meta_description` varchar(255) DEFAULT NULL,
 `meta_keywords` varchar(255) DEFAULT NULL,
 `status` tinyint(2) NOT NULL DEFAULT '1',
 `news_read` int(11) DEFAULT '0',
 `old_id` int(11) DEFAULT NULL,
 `old_section_id` int(11) DEFAULT NULL,
 `old_section` varchar(50) DEFAULT NULL,
 `lang` varchar(10) DEFAULT NULL,
 `featured` int(11) NOT NULL DEFAULT '0',
 `in_timeline` tinyint(2) NOT NULL DEFAULT '0',
 `is_highlight` tinyint(2) NOT NULL DEFAULT '0',
 `home_exclusive` tinyint(2) NOT NULL DEFAULT '0',
 `home_articles` tinyint(4) NOT NULL DEFAULT '0',
 `home_articles_selected` tinyint(4) NOT NULL DEFAULT '0',
 `home_mostread` tinyint(4) NOT NULL DEFAULT '0',
 `video_featured` tinyint(4) NOT NULL DEFAULT '0',
 `photos_featured` tinyint(4) NOT NULL DEFAULT '0',
 `party_featured` tinyint(4) NOT NULL DEFAULT '0',
 `party_activity` tinyint(4) NOT NULL DEFAULT '0',
 `sport_featured` tinyint(4) NOT NULL DEFAULT '0',
 `fnoun_featured` tinyint(4) NOT NULL DEFAULT '0',
 `special_reports` tinyint(4) NOT NULL DEFAULT '0',
 `mainnav` tinyint(4) NOT NULL DEFAULT '0',
 PRIMARY KEY (`news_id`),
 KEY `News_Category_idx` (`category_id`),
 KEY `News_Type` (`news_type`),
 KEY `News_Date` (`news_date`),
 KEY `News_Read` (`news_read`),
 KEY `old_id` (`old_id`),
 KEY `Sources` (`news_source`),
 KEY `Authors` (`author_id`),
 KEY `Featured` (`featured`),
 KEY `Articles` (`home_articles`),
 KEY `Mostread` (`home_mostread`),
 KEY `video_featured` (`video_featured`,`photos_featured`),
 KEY `party_activity` (`party_activity`),
 KEY `sport_featured` (`sport_featured`,`fnoun_featured`),
 KEY `old_section_id` (`old_section_id`),
 KEY `old_section` (`old_section`),
 KEY `old section id` (`old_section_id`),
 KEY `old section` (`old_section`),
 KEY `articles_selected` (`home_articles_selected`),
 KEY `URL` (`news_url`),
 KEY `special_reports` (`special_reports`),
 KEY `mainnav` (`mainnav`),
 KEY `status` (`status`),
 KEY `in_timeline` (`in_timeline`),
 KEY `is_highlight` (`is_highlight`),
 KEY `home_exclusive` (`home_exclusive`),
 KEY `party_featured` (`party_featured`),
 FULLTEXT KEY `news_title` (`news_title`)
) ENGINE=InnoDB AUTO_INCREMENT=167614 DEFAULT CHARSET=utf8

列（status - featured - in_timeline - is_highlight）类型是（ENUM）但我已更改为（tinyint） 它工作了几天，但问题再次出现。 所以我必须删除索引并再次创建它。 我不知道这是什么问题？ 请有人帮忙。

解释查询，当问题发生时以及删除索引并再次创建它之后它是一样的。

SQL query: Explain SELECT `N`.`news_id`, `N`.`news_title`, `N`.`news_url`, `N`.`news_image`, `N`.`news_type`, `N`.`news_date`, `N`.`is_highlight`, `N`.`news_brief`, `C`.`category_name`, `C`.`category_url`, `C`.`category_color`, `NT`.*, GROUP_CONCAT(T.tag_name separator ",") AS tags, GROUP_CONCAT(T.tag_url separator ",") AS `tags_urls` FROM `news` AS `N` INNER JOIN `news_categories` AS `C` ON C.category_id = N.category_id AND C.status = "1" LEFT JOIN `news_tags_relation` AS `NT` ON NT.news_id = N.news_id LEFT JOIN `news_tags` AS `T` ON T.tag_id = NT.tag_id WHERE (N.status = "1" AND N.category_id = "22") GROUP BY `N`.`news_id` ORDER BY `N`.`news_date` DESC;

行：4

This table does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available.

附图中的表格