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MYSQL 查询执行速度非常慢

php mysql sql yii database-performance
2022-08-30 20:58:56

我开发了一个用户批量上传模块。有2种情况，当我进行20 000条记录的批量上传时，数据库没有记录。大约需要5个小时。但是，当数据库已经有大约30 000条记录时，上传非常非常慢。上传 20 000 条记录大约需要 11 个小时。我只是通过方法读取CSV文件。fgetcsv

if (($handle = fopen($filePath, "r")) !== FALSE) {
            while (($peopleData = fgetcsv($handle, 10240, ",")) !== FALSE) {
                if (count($peopleData) == $fieldsCount) {

//inside i check if user already exist (firstName & lastName & DOB)
//if not, i check if email exist. if exist, update the records.
//other wise insert a new record.
}}}

下面是运行的查询。（我正在使用Yii框架）

SELECT * 
FROM `AdvanceBulkInsert` `t` 
WHERE renameSource='24851_bulk_people_2016-02-25_LE CARVALHO 1.zip.csv' 
LIMIT 1

SELECT cf.*, ctyp.typeName, cfv.id as customId, cfv.customFieldId, 
       cfv.relatedId, cfv.fieldValue, cfv.createdAt 
FROM `CustomField` `cf` 
    INNER JOIN CustomType ctyp on ctyp.id = cf.customTypeId 
    LEFT OUTER JOIN CustomValue cfv on cf.id = cfv.customFieldId 
                and relatedId = 0 
    LEFT JOIN CustomFieldSubArea cfsa on cfsa.customFieldId = cf.id 
WHERE ((relatedTable = 'people' and enabled = '1') 
  AND (onCreate = '1')) 
  AND (cfsa.subarea='peoplebulkinsert') 
ORDER BY cf.sortOrder, cf.label

SELECT * 
FROM `User` `t` 
WHERE `t`.`firstName`='Franck' 
  AND `t`.`lastName`='ALLEGAERT ' 
  AND `t`.`dateOfBirth`='1971-07-29' 
  AND (userType NOT IN ("1")) 
LIMIT 1

如果存在，请更新用户：

UPDATE `User` SET `id`='51394', `address1`='49 GRANDE RUE', 
                  `mobile`='', `name`=NULL, `firstName`='Franck', 
                  `lastName`='ALLEGAERT ', `username`=NULL, 
                  `password`=NULL, `email`=NULL, `gender`=0, 
                  `zip`='60310', `countryCode`='DZ', 
                  `joinedDate`='2016-02-23 10:44:18', 
                  `signUpDate`='0000-00-00 00:00:00', 
                  `supporterDate`='2016-02-25 13:26:37', `userType`=3, 
                  `signup`=0, `isSysUser`=0, `dateOfBirth`='1971-07-29', 
                  `reqruiteCount`=0, `keywords`='70,71,72,73,74,75', 
                  `delStatus`=0, `city`='AMY', `isUnsubEmail`=0, 
                  `isManual`=1, `isSignupConfirmed`=0, `profImage`=NULL, 
                  `totalDonations`=NULL, `isMcContact`=NULL, 
                  `emailStatus`=NULL, `notes`=NULL, 
                  `addressInvalidatedAt`=NULL, 
                  `createdAt`='2016-02-23 10:44:18', 
                  `updatedAt`='2016-02-25 13:26:37', `longLat`=NULL 
WHERE `User`.`id`='51394'

如果用户不存在，请插入新记录。

表引擎类型为 MYISAM。只有电子邮件列具有索引。

如何对此进行优化以缩短处理时间？

查询 2 花费了 0.4701 秒，这意味着对于 30 000 条记录，需要 14103 秒，即大约 235 分钟。约6小时。

更新

CREATE TABLE IF NOT EXISTS `User` (
  `id` bigint(20) NOT NULL,
  `address1` text COLLATE utf8_unicode_ci,
  `mobile` varchar(15) COLLATE utf8_unicode_ci DEFAULT NULL,
  `name` varchar(45) COLLATE utf8_unicode_ci DEFAULT NULL,
  `firstName` varchar(64) COLLATE utf8_unicode_ci DEFAULT NULL,
  `lastName` varchar(64) COLLATE utf8_unicode_ci DEFAULT NULL,
  `username` varchar(20) COLLATE utf8_unicode_ci DEFAULT NULL,
  `password` varchar(45) COLLATE utf8_unicode_ci DEFAULT NULL,
  `email` varchar(45) COLLATE utf8_unicode_ci DEFAULT NULL,
  `gender` tinyint(2) NOT NULL DEFAULT '0' COMMENT '1 - female, 2-male, 0 - unknown',
  `zip` varchar(15) COLLATE utf8_unicode_ci DEFAULT NULL,
  `countryCode` varchar(3) COLLATE utf8_unicode_ci DEFAULT NULL,
  `joinedDate` datetime DEFAULT NULL,
  `signUpDate` datetime NOT NULL COMMENT 'User signed up date',
  `supporterDate` datetime NOT NULL COMMENT 'Date which user get supporter',
  `userType` tinyint(2) NOT NULL,
  `signup` tinyint(2) NOT NULL DEFAULT '0' COMMENT 'whether user followed signup process 1 - signup, 0 - not signup',
  `isSysUser` tinyint(1) NOT NULL DEFAULT '0' COMMENT '1 - system user, 0 - not a system user',
  `dateOfBirth` date DEFAULT NULL COMMENT 'User date of birth',
  `reqruiteCount` int(11) DEFAULT '0' COMMENT 'User count that he has reqruited',
  `keywords` text COLLATE utf8_unicode_ci COMMENT 'Kewords',
  `delStatus` tinyint(2) NOT NULL DEFAULT '0' COMMENT '0 - active, 1 - deleted',
  `city` varchar(50) COLLATE utf8_unicode_ci DEFAULT NULL,
  `isUnsubEmail` tinyint(1) NOT NULL DEFAULT '0' COMMENT '0 - ok, 1 - Unsubscribed form email',
  `isManual` tinyint(1) NOT NULL DEFAULT '0' COMMENT '0 - ok, 1 - Manualy add',
  `longLat` varchar(45) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT 'Longitude and Latitude',
  `isSignupConfirmed` tinyint(4) NOT NULL DEFAULT '0' COMMENT 'Whether user has confirmed signup ',
  `profImage` tinytext COLLATE utf8_unicode_ci COMMENT 'Profile image name or URL',
  `totalDonations` float DEFAULT NULL COMMENT 'Total donations made by the user',
  `isMcContact` tinyint(1) DEFAULT NULL COMMENT '1 - Mailchimp contact',
  `emailStatus` tinyint(2) DEFAULT NULL COMMENT '1-bounced, 2-blocked',
  `notes` text COLLATE utf8_unicode_ci,
  `addressInvalidatedAt` datetime DEFAULT NULL,
  `createdAt` datetime NOT NULL,
  `updatedAt` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

CREATE TABLE IF NOT EXISTS `AdvanceBulkInsert` (
  `id` int(11) NOT NULL,
  `source` varchar(256) NOT NULL,
  `renameSource` varchar(256) DEFAULT NULL,
  `countryCode` varchar(3) NOT NULL,
  `userType` tinyint(2) NOT NULL,
  `size` varchar(128) NOT NULL,
  `errors` varchar(512) NOT NULL,
  `status` char(1) NOT NULL COMMENT '1:Queued, 2:In Progress, 3:Error, 4:Finished, 5:Cancel',
  `createdAt` datetime NOT NULL,
  `createdBy` int(11) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE IF NOT EXISTS `CustomField` (
  `id` int(11) NOT NULL,
  `customTypeId` int(11) NOT NULL,
  `fieldName` varchar(64) COLLATE utf8_unicode_ci DEFAULT NULL,
  `relatedTable` varchar(64) COLLATE utf8_unicode_ci DEFAULT NULL,
  `defaultValue` text COLLATE utf8_unicode_ci,
  `sortOrder` int(11) NOT NULL DEFAULT '0',
  `enabled` char(1) COLLATE utf8_unicode_ci DEFAULT '1',
  `listItemTag` char(1) COLLATE utf8_unicode_ci DEFAULT NULL,
  `required` char(1) COLLATE utf8_unicode_ci DEFAULT '0',
  `onCreate` char(1) COLLATE utf8_unicode_ci DEFAULT '1',
  `onEdit` char(1) COLLATE utf8_unicode_ci DEFAULT '1',
  `onView` char(1) COLLATE utf8_unicode_ci DEFAULT '1',
  `listValues` text COLLATE utf8_unicode_ci,
  `label` varchar(64) COLLATE utf8_unicode_ci DEFAULT NULL,
  `htmlOptions` text COLLATE utf8_unicode_ci
) ENGINE=MyISAM AUTO_INCREMENT=12 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

CREATE TABLE IF NOT EXISTS `CustomFieldSubArea` (
  `id` int(11) NOT NULL,
  `customFieldId` int(11) NOT NULL,
  `subarea` varchar(256) COLLATE utf8_unicode_ci NOT NULL
) ENGINE=MyISAM AUTO_INCREMENT=43 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

CREATE TABLE IF NOT EXISTS `CustomValue` (
  `id` int(11) NOT NULL,
  `customFieldId` int(11) NOT NULL,
  `relatedId` int(11) NOT NULL,
  `fieldValue` text COLLATE utf8_unicode_ci,
  `createdAt` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=MyISAM AUTO_INCREMENT=86866 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

整个 PHP 代码都在这里 http://pastie.org/10737962

更新 2

解释查询的输出

enter image description here


答案 1

索引是你的朋友。

UPDATE User ... WHERE id = ...- 迫切需要一个关于ID的索引，可能是。PRIMARY KEY

与 .renameSource

SELECT * 
FROM `User` `t` 
WHERE `t`.`firstName`='Franck' 
  AND `t`.`lastName`='ALLEGAERT ' 
  AND `t`.`dateOfBirth`='1971-07-29' 
  AND (userType NOT IN ("1")) 
LIMIT 1;

需求 ;字段可以按任意顺序排列（在本例中）。INDEX(firstName, lastName, dateOfBirth)

查看每个查询以了解其需求，然后将其添加到表中。阅读我关于构建索引的食谱。INDEX


答案 2

请尝试以下操作来提高查询性能：

  • 在数据库结构中定义索引，并仅获取所需的列。
  • 不要在选择查询中使用 * 。
  • 并且不要像 ，那样将 id 放在引号中，而是要这样做。User.id='51394'User.id= 51394
  • 如果您在引号中给出id，那么您的索引将不起作用。这种方法将查询性能提高 20%。
  • 如果使用的 是 则 无法在数据库表之间定义索引，请将数据库引擎更改为 。并创建一些索引，如外键，全文索引。ENGINE=MyISAMENGINE=InnoDB

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