FRONTEND_MVC/migrations/m231103_074755_report_topic.php

<?php

use yii\db\Schema;
use yii\db\Migration;

class m231103_074755_report_topic extends Migration
{

    public function init()
    {
        $this->db = 'db';
        parent::init();
    }

    public function safeUp()
    {
        $tableOptions = 'ENGINE=InnoDB';

        $this->createTable(
            '{{%report_topic}}',
            [
                'id'=> $this->primaryKey()->unsigned(),
                'parent_id'=> $this->integer()->unsigned()->null()->defaultValue(0),
                'date'=> $this->datetime()->notNull()->defaultExpression("CURRENT_TIMESTAMP"),
                'title'=> $this->text()->null()->defaultValue(null),
                'body'=> $this->text()->notNull(),
                'folder'=> $this->string(250)->notNull()->defaultValue(''),
                'sort'=> $this->integer()->notNull()->defaultValue(0),
                'active'=> $this->integer()->notNull()->defaultValue(0),
            ],$tableOptions
        );
        $this->createIndex('sel','{{%report_topic}}',['id','parent_id','active'],false);
        $this->createIndex('sort','{{%report_topic}}',['sort'],false);

    }

    public function safeDown()
    {
        $this->dropIndex('sel', '{{%report_topic}}');
        $this->dropIndex('sort', '{{%report_topic}}');
        $this->dropTable('{{%report_topic}}');
    }
}