现在我有这个：

SELECT guid FROM wp_posts 
WHERE id NOT IN (SELECT post_id as p FROM wp_postmeta WHERE meta_key LIKE "_thumbnail_id") 
AND post_type = \'post\'
AND post_date LIKE \'%2016%\'

我正在尝试在x到y年内获得没有特征图像的帖子的永久链接。是否可以执行以下操作：

AND post_date (get it from 2016-2017)

AND ( 
  post_date_gmt < DATE(NOW()-INTERVAL 1 YEAR)
  )