Delete all Custom Field entries assigned to posts that do not exist in the posts table.
Navigate to Settings -> Remove Unused CFs and delete all postmeta for non-existing posts.
安装:
Upload the DX Remove Unused Custom Fields plugin to your blog and activate it.
Go to Settings -> Remove Unused CFs
Click 'Delete' to drop the unrelated fields.
常见问题:
Is it permanently removing the data?
Yes, the data would be removed from the database so use at your own risk.