如何在 CakePHP 3 中实现 INSERT ON DUPLICATE KEY UPDATE aka upsert?

2021-12-21 00:00:00 upsert mysql cakephp-3.0 cakephp insert-update

我使用的是 CakePHP 3 和 MySQL.

I am using CakePHP 3 and MySQL.

我想通过 CakePHP 3 模型实现 INSERT on DUPLICATE KEY UPDATE aka upsert 查询.

I would like to implement a INSERT on DUPLICATE KEY UPDATE aka upsert query via CakePHP 3 model.

鉴于下表:

+----+----------+-----+
| id | username | age |
+----+----------+-----+
|  1 | admin    |  33 |
|  2 | Timmy    |  17 |
|  3 | Sally    |  23 |
+----+----------+-----+

其中 id 是主键，username 是唯一索引

where id is Primary Key and username is unique index

当我有以下值等待更新时:

When I have the following values awaiting to be upserted:

Felicia, 27
Timmy, 71

我希望在更新插入后得到以下结果:

I expect the following result after the upsert:

+----+----------+-----+
| id | username | age |
+----+----------+-----+
|  1 | admin    |  33 |
|  2 | Timmy    |  71 |
|  3 | Sally    |  23 |
|  4 | Felicia  |  27 |
+----+----------+-----+

我知道如何在 MySQL 查询中进行更新插入:

INSERT INTO `users` (`username`, `age`) 
VALUES ('Felicia', 27), ('Timmy', 71) 
ON DUPLICATE KEY UPDATE 
`username`=VALUES(`username`),`age`=VALUES(`age`);

我知道如何在 CakePHP3 中的多个查询中执行此操作.

   $newUsers = [
        [
            'username' => 'Felicia',
            'age' => 27,
        ],
        [
            'username' => 'Timmy',
            'age' => 71,
        ],
    ];

    foreach ($newUsers as $newUser) {
        $existingRecord = $this->Users->find()
            ->select(['id'])
            ->where(['username' => $newUser['username']])
            ->first();

        if (empty($existingRecord)) {
            $insertQuery = $this->Users->query();
            $insertQuery->insert(array_keys($newUser))
                ->values($newUser)
                ->execute();
        } else {
            $updateQuery = $this->Users->query();
            $updateQuery->update()
                ->set($newUser)
                ->where(['id' => $existingRecord->id])
                ->execute();
        }
    }

我想知道的是:

即使我使用链接，有没有办法在一行中使用 CakePHP 3 进行更新插入?

请告诉我如何实施.

推荐答案

使用 https://stackoverflow.com/上提供的答案a/24990944/80353，我想使用问题中给出的代码示例重新表述这一点.

Using the answer provided at https://stackoverflow.com/a/24990944/80353, I want to rephrase this using the code sample given in the question.

对以下记录运行 upsert

To run upsert on the following records

Felicia, 27
Timmy, 71

进入这张表

+----+----------+-----+
| id | username | age |
+----+----------+-----+
|  1 | admin    |  33 |
|  2 | Timmy    |  17 |
|  3 | Sally    |  23 |
+----+----------+-----+

最好的方法是把它写成

$newUsers = [
    [
        'username' => 'Felicia',
        'age' => 27,
    ],
    [
        'username' => 'Timmy',
        'age' => 71,
    ],
];

$columns = array_keys($newUsers[0]);

$upsertQuery = $this->Users->query();

$upsertQuery->insert($columns);

// need to run clause('values') AFTER insert()
$upsertQuery->clause('values')->values($newUsers);

$upsertQuery->epilog('ON DUPLICATE KEY UPDATE `username`=VALUES(`username`), `age`=VALUES(`age`)')
                ->execute();

查看this了解有关<代码>结语

查看this了解如何在单个查询中编写插入多条记录的详细信息

Check this out for details on how to write insert multiple records in single query

相关文章