我试图POS在迁移关系中建立一个系统。我Doctrine/DBAL在运行 migrate 之前使用它来建立关系。安装后Doctrine/DBAL运行迁移时出现未知database错误。如何修复此错误？
这是Laravel 5，当我运行迁移时运行错误：
Illuminate\Database\QueryException : SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that Illuminate\Database\QueryException : SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corre
sponds to your MariaDB server version for the right syntax to use near ') on delete cascade on update cascade' at line 1 (SQL: alter table `products` add constrai
nt `products_category_id_foreign` foreign key (`category_id`) references `categories` () on delete cascade on update cascade)
at D:\laravel\POS_latihan\vendor\laravel\framework\src\Illuminate\Database\Connection.php:665
661| // If an exception occurs when attempting to run a query, we'll format the error
662| // message to include the bindings with SQL, which will make this exception a
663| // lot more helpful to the developer instead of just the database's errors.
664| catch (Exception $e) {
> 665| throw new QueryException(
666| $query, $this->prepareBindings($bindings), $e
667| );
668| }
669|
Exception trace:
1 Doctrine\DBAL\Driver\PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that cor
responds to your MariaDB server version for the right syntax to use near ') on delete cascade on update cascade' at line 1")
D:\laravel\POS_latihan\vendor\doctrine\dbal\lib\Doctrine\DBAL\Driver\PDOConnection.php:63
2 PDOException::("SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your Mari
aDB server version for the right syntax to use near ') on delete cascade on update cascade' at line 1")
D:\laravel\POS_latihan\vendor\doctrine\dbal\lib\Doctrine\DBAL\Driver\PDOConnection.php:61
Please use the argument -v to see more details.