facebook - Fetching photos in which 2 or more people are tagged -

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as title says, i'm trying fetch 10 photos in logged user , 1 or more of his/her friends tagged. i'm trying php api , fql.

i'm new fql, not new programming etc. way able achieve want dynamically building multiple queries this:

select pid, src_big photo pid in(     select pid photo_tag subject = me()  ) , pid in(    select pid photo_tag      subject = '1530195' or      subject = '3612831' or      subject = '6912041' or      ... )

apart being ugly, slow. queries limited length shown above because fail when longer.

multi-queries didn't me because can't use 'as', sql isn't greatest strength , i'm hoping i've missed something..

there must better way! anyone?

just use 2 queries , intersection in programming language of choice.

  • select subject, pid photo_tag subject = me()
  • select pid, subject photo_tag subject in (select uid2 friend uid1=me())

batch these 2 calls

fql?q={"userphotos":"select subject, pid                       photo_tag                       subject = me()",        "friendphotos":"select pid, subject                         photo_tag                         subject in                        (select uid2 friend uid1=me())"}

then in programming language intersection of these 2 sets.

a0 = data['data'][0]['fql_result_set'] a1 = data['data'][1]['fql_result_set']

for example in python, simple as

>>> photos = {} >>> p in a0: ...     q in a1: ...         if p['pid'] == q['pid']: ...             pid =  p['pid'] ...             if pid in photos: ...                 photos[pid].append(p['subject']) ...             else: ...                 photos[pid] = [q['subject']] ...                 photos[pid].append(p['subject'])

photos give dict each key having list of ids value. take 10 of these , supply photo table fql call

in python facepy module might like

photoquery = 'select pid, src_big photo '+              'pid ='+pid1+' or              'pid ='+pid2+' or               ...  graph.fql(photoquery)

the slowest section overall photo_tag query on friends. select pid, subject photo_tag subject in (select uid2 friend uid1=me())


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