Get profile picture creation date from user table in FQL

Question

How can I get my friends profile pictures creation date using FQL multi-query ?

I wrote below query:

SELECT src_small, src_big, src FROM photo WHERE src IN
(SELECT pic_square, pic_small, pic_big, pic FROM user WHERE uid IN
(SELECT uid2 FROM friend WHERE uid1 = me()) )

but it says:

{

  "error": {
  "message": "Your statement is not indexable. The WHERE clause must contain an indexable column.    Such columns are marked with * in the tables linked from   http://developers.facebook.com/docs/reference/fql ", 
  "type": "NoIndexFunctionException", 
  "code": 604
 }
}

Thanks in advance.

Answer 1

from comment by Arjuna Del Toso:

You can use a column in the WHERE clause only if it's marked as "indexable"

Not, that is not totally correct.

You need at least one indexable column in your where clause – once you have that, you can use other, non-indexed columns as well to further restrict the result.

---

Since the user's current profile picture is always the album cover photo of their Profile Pictures album, we can use that to get the object_id of the profile picture of our friends, and than use that to select the info we want from the photo table:

SELECT owner, src_small, created FROM photo WHERE object_id IN (
  SELECT cover_object_id FROM album WHERE owner IN (
    SELECT uid1 FROM friend WHERE uid2 = me()
  ) AND name = 'Profile Pictures'
)