在 Yii 2.0 中的命令行中，从A数据库迁移数据至B数据库的实现

1、将数据从csp的数据库中迁移至cloud的数据库中。`channel-pub-api-csp`.`cpa_channel_app_source`。条件查询出 95 条记录。如图1

图1

2、`channel-pub-api-cloud`.`cpa_channel_app_source`。总计查询出 158 条记录。如图2

图2

3、将数据从csp的数据库中迁移至cloud的数据库中。字段值变动：id，INSERT `channel-pub-api-cloud`.`cpa_channel_app_source`。编辑命令行脚本。/console/controllers/Migrate20210425Controller.php

<?php
/**
 * Created by PhpStorm.
 * User: Qiang Wang
 * Date: 2021/04/25
 * Time: 13:59
 */

namespace console/controllers;

use Yii;
use yii/console/Controller;
use yii/console/ExitCode;
use yii/db/Connection;
use yii/db/Exception;

/**
 * 数据库迁移(20210425)
 *
 * @author Qiang Wang <shuijingwanwq@163.com>
 * @since  1.0
 */
class Migrate20210425Controller extends Controller
{
    /**
     * 将数据从csp的数据库中迁移至cloud的数据库中(仅导入视频兔兔下的相关数据)
     *
     * @return int
     * @throws Exception
     */
    public function actionCspToCloud()
    {
        // 创建一个单独的非缓存链接到数据库(dsp)
        $cspDb = new Connection([
            'dsn' => 'mysql:host=localhost;dbname=channel-pub-api-csp',
            'username' => 'mysql',
            'password' => 'hqy-webtv',
            'tablePrefix' => 'cpa_',
            'charset' => 'utf8mb4',
        ]);
        $cspDb->open();
        // 设置 PDO 连接属性 PDO::MYSQL_ATTR_USE_BUFFERED_QUERY 为 false
        $cspDb->pdo->setAttribute(/PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);

        // 创建一个单独的非缓存链接到数据库(cloud)
        $cloudDb = new Connection([
            'dsn' => 'mysql:host=localhost;dbname=channel-pub-api-cloud',
            'username' => 'mysql',
            'password' => 'hqy-webtv',
            'tablePrefix' => 'cpa_',
            'charset' => 'utf8mb4',
        ]);
        $cloudDb->open();
        // 设置 PDO 连接属性 PDO::MYSQL_ATTR_USE_BUFFERED_QUERY 为 false
        $cloudDb->pdo->setAttribute(/PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);

        $channelAppSources = $cspDb->createCommand('SELECT group_id, group_name, uuid, channel_id, channel_code, channel_type_id, channel_type_code, name, avatar, fans_count, source, source_uuid, source_product_id, source_user_token, permission, status, is_deleted, created_at, updated_at, deleted_at FROM {{%channel_app_source}} WHERE channel_type_code LIKE /'vtt_%/'')->queryAll();
        $cloudDb->createCommand()->batchInsert('cpa_channel_app_source', ['group_id', 'group_name', 'uuid', 'channel_id', 'channel_code', 'channel_type_id', 'channel_type_code', 'name', 'avatar', 'fans_count', 'source', 'source_uuid', 'source_product_id', 'source_user_token', 'permission', 'status', 'is_deleted', 'created_at', 'updated_at', 'deleted_at'], $channelAppSources)->execute();

        $cspDb->close();
        $cloudDb->close();

        return ExitCode::OK;
    }
}

4、执行命令：./yii migrate20210425/csp-to-cloud。`channel-pub-api-cloud`.`cpa_channel_app_source`。总计查询出 253 条记录，新增 95 条记录。符合预期。如图3

图3