SQL 语句问题

Question

DELETE a,b,c FROM wp_posts a
LEFT JOIN wp_term_relationships b ON (a.ID = b.object_id)
LEFT JOIN wp_postmeta c ON (a.ID = c.post_id)
WHERE a.post_type = 'revision'

你好，我想问下 他这个SQL是删除3个字段吗？还是把符合条件的数据都删掉了？？

Answer 1

删除数据，删除字段不会是 DELETE 的，而是 ALTER