in app have asked extended permission obtain email address of facebook application users. now... how can obtain these emails advice purpose? i've tried no success:
select email user is_app_user=1 i obtain following error:
your statement not indexable. clause must contain indexable column. such columns marked * in tables linked http://developers.facebook.com/docs/reference/fql
surfing web understood it's save mail addresses in servers or somewhere. correct? exist workaround?
it means attribute is_app_user in where clause not have index in database, hence facebook not execute statement. can use attributes marked * on this page.
indexed attributes in user table are: uid, name, username, third_party_id
workaround store fb_id of users using application join. can store email address of user when he/she joins. prefer storing fb_id of user permits user revoke email permissions whenever wishes so.
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