MY-SQL表查询给出不正确的结果，直到我优化表

Question

我有这个表：

CREATE TABLE `posts` (
    `id` int(11) NOT NULL AUTO_INCREMENT, 
    `user_id` int(11) NOT NULL, 
    `origin_post_id` int(11) NOT NULL, 
    `ref_post_id` int(11) NOT NULL, 
    `broker_user_id` int(11) NOT NULL, 
    `isshared` tinyint(4) NOT NULL, 
    `type` tinyint(4) NOT NULL, 
    `deal_type` tinyint(4) NOT NULL, 
    `title` varchar(200) NOT NULL, 
    `currency` varchar(10) NOT NULL, 
    `country_code` varchar(10) NOT NULL, 
    `price` float(10,2) NOT NULL, 
    `price_to` float(10,2) NOT NULL, 
    `sector` int(11) NOT NULL, 
    `protype` int(11) NOT NULL, 
    `sea_view` int(11) NOT NULL, 
    `sea_view_to` int(11) NOT NULL, 
    `area` int(11) NOT NULL, 
    `area_to` int(11) NOT NULL, 
    `area_mesure_type` tinyint(4) NOT NULL DEFAULT '1', 
    `building_area` int(11) NOT NULL, 
    `building_area_to` int(11) NOT NULL, 
    `building_area_mesure_type` tinyint(4) NOT NULL DEFAULT '1', 
    `bathrooms` int(11) NOT NULL, 
    `bathrooms_to` int(11) NOT NULL, 
    `rooms` int(11) NOT NULL, 
    `rooms_to` int(11) NOT NULL, 
    `location` varchar(300) NOT NULL, 
    `lat` float NOT NULL, 
    `lng` float NOT NULL, 
    `description` text NOT NULL, 
    `map_data` varchar(500) NOT NULL, 
    `shape_data` text NOT NULL, 
    `seo_title` varchar(300) NOT NULL, 
    `seo_keywords` varchar(300) NOT NULL, 
    `seo_description` varchar(300) NOT NULL, 
    `status` tinyint(4) NOT NULL, 
    `publish_date` date NOT NULL, 
    `expiry_date` date NOT NULL, 
    `request_status` enum('','NEW','ACCEPTED','REJECTED') NOT NULL, 
    `request_date` date NOT NULL, 
    `accept_date` date NOT NULL, 
    `share_per` float(5,2) NOT NULL, 
    `deal_completed` tinyint(4) NOT NULL, 
    `completed_by` int(11) NOT NULL, 
    `created` datetime NOT NULL, 
    `updated` datetime NOT NULL, 
    PRIMARY KEY (`id`), 
    KEY `type` (`type`), 
    KEY `deal_type` (`deal_type`), 
    KEY `price` (`price`), 
    KEY `sector` (`sector`), 
    KEY `protype` (`protype`), 
    KEY `sea_view` (`sea_view`), 
    KEY `area` (`area`), 
    KEY `building_area` (`building_area`), 
    KEY `bathrooms` (`bathrooms`), 
    KEY `rooms` (`rooms`), 
    KEY `lat` (`lat`), 
    KEY `lng` (`lng`), 
    KEY `status` (`status`), 
    KEY `price_to` (`price_to`), 
    KEY `sea_view_to` (`sea_view_to`), 
    KEY `area_to` (`area_to`), 
    KEY `building_area_to` (`building_area_to`), 
    KEY `bathrooms_to` (`bathrooms_to`), 
    KEY `rooms_to` (`rooms_to`), 
    KEY `request_status` (`request_status`), 
    KEY `request_date` (`request_date`), 
    KEY `accept_date` (`accept_date`), 
    KEY `ref_post_id` (`ref_post_id`), 
    KEY `deal_completed` (`deal_completed`), 
    KEY `location` (`location`(255)), 
    KEY `user_id` (`user_id`), 
    KEY `country_code` (`country_code`), 
    KEY `expiry_date` (`expiry_date`), 
    KEY `origin_post_id` (`origin_post_id`), 
    KEY `completed_by` (`completed_by`), 
    FULLTEXT KEY `title_location_description` (`title`,`location`,`description`), 
    CONSTRAINT `posts_ibfk_3` FOREIGN KEY (`user_id`) REFERENCES `app_users` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION 
) ENGINE=InnoDB AUTO_INCREMENT=833 DEFAULT CHARSET=utf8 

当我运行select count(id) from posts where deal_completed='1' and user_id='<anyuserid>'然后它给了零个记录总是但是当我优化这种表然后它给正确的结果和一段时间后，我需要再次优化表格。

Answer 1

可能是因为您使用的键太多。仅当您要使用该列搜索表时才使用密钥，或者只能使用该列快速操作的顺序来使用密钥。如果不需要，不要使用太多的键，因为您一次又一次地优化了表。尝试尽可能标准化表格，然后尝试使用FOREIGN KEYS。正如@Tim所说，如果它是一个int尝试int。