id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
15049	postavoid add_metadata to insert duplicated entries	leogermani		"when calling add_metadata, check if there is already an entry with the same object id, meta_key, and meta_value. If there is, return false so we dont have duplicated entries.

The unique paramater of the add_metadata does not handle with that, since it only cares about the meta_key not beeing duplicated.

When playing with multiple metadatas with the same meta_key, very often you have to check if a value already exists before adding it. I beleive add_metadata should handle it automatically."	enhancement	closed	normal		Database	3.1	normal	duplicate	metadata, post_meta, user_meta