Cakephp 3 SubQuery

Question

如何在CakePHP3中编写以下SQL语句？

select * from feeds where feed_category_id in (SELECT feed_category_id FROM user_categories where user_id=1);

我知道它的子查询，但我无法弄清楚如何写它;

我试过;

$usercategories = $usercategorytable->find('all')
    ->select('feed_category_id')
    ->where(['user_id'=>$user_id]);

$query->where(['feed_category_id' => $usercategories]);

但是我得到了错误;

Error: SQLSTATE[21000]: Cardinality violation: 1242 Subquery returns more than 1 row

SELECT Feeds.id AS `Feeds__id`, Feeds.title AS `Feeds__title`, Feeds.url AS `Feeds__url`, Feeds.type AS `Feeds__type`, Feeds.description AS `Feeds__description`, Feeds.bhasimages AS `Feeds__bhasimages`, Feeds.user_id AS `Feeds__user_id`, Feeds.feed_category_id AS `Feeds__feed_category_id`, Feeds.feed_owner_id AS `Feeds__feed_owner_id`, Feeds.enabled AS `Feeds__enabled`, Feeds.created AS `Feeds__created`, Feeds.modified AS `Feeds__modified`, Feeds.errorflag AS `Feeds__errorflag`, Feeds.country AS `Feeds__country` FROM feeds Feeds WHERE feed_category_id = (SELECT user_categories.feed_category_id AS `user_categories__feed_category_id` FROM user_categories user_categories WHERE user_categories.user_id = :c0) LIMIT 20 OFFSET 0