I would like to generate a list of facebook user id's of people who are not in the United States. Rather than iterating through a list of user id's and checking each locale, I would like to do an FQL query. I attempted to execute this statement:
SELECT uid, name FROM user WHERE locale != "en_US"
However, when I make the query, I recieve the response:
(code 604): Your statement is not indexable.
This is because locale is not an indexable field. Do any of you know what I can do to get around this? Or perhaps another way of doing this entirely?
Thanks in advance!
It says "Your statement is not indexable." That means, you can't just use any query (like, extreme case, SELECT uid, name FROM user to get all facebook users) that does not conform. Only queries that include WHERE on fields that are indexable can be used. It's a policy, you can not circumvent it.
Related
I want to do a public search on all facebook users according to the name of the user, but i want the search not to be on the exact name. for exmaple if a user will search for 'John Ada' the result 'John Adam' will be retreived too.
After that the results need to be ordered by mutual_friend_count.
I manged to do this partly with the following FQL :
SELECT uid,name, pic_square, profile_url , mutual_friend_count FROM user WHERE contains("Name Surename")
order by mutual_friend_count desc
but it returns only exact names, and if the name was missing a letter like my earlier example the user was not retreived.
I tried to mess around with the Offset and Limit but with no success either.
Thanks!
The Facebook search algorithms seem to be optimized to find full names. A partial name never seems to return as many results as a full name will. In my experience, Facebook knows how to expand names for common variants. A search for "John Adam" will return "John Adams", "Johnny Adams" and "John Addams"
The other battle you are fighting is the Facebook filtering algorithm. Facebook first finds all matches that meet your query, then filters them for visibility to your user.
You can try adding AND NOT is_blocked to your WHERE statement. This should filter out anything that isn't visible to you before the filtering algorithm.
I look for facebook users (any user, not just my friends or the friends of a specific user) with a pattern in the name, like this:
SELECT first_name,uid FROM user WHERE contains('pete')
This returns an array of people who's name contains "pete" (i.e. also "peter"). The number is quite high, so the results are of course truncated. I would like to grab, in this set (before the server-side truncation) who has most mutual friends with me (or with an arbitrary user id). However, issuing
SELECT first_name,uid FROM user WHERE contains('pete') AND mutual_friend_count > 1
gives and empty set (and no errors). I think the server truncates before applying the latter selection, as in normal SQL would happen, for performance reasons (or explicit limits I missed in the documentation).
I made a second attempt by trying to retrieve all the friends of friends of a userid, and then select on the name. However, retrieving friends of friends is not allowed (and technically difficult because some friends hide their list of friends, and this breaks the query).
I can see no other way to achieve my goal... is there any? (I mean: given a userid, search for users with highest number of mutual friends).
Your best bet, since there's no FQL solution, would be to begin a database of your own following Facebook's best practices and policies of course. That way you can structure your data. Data can be kept current by setting up Facebook's Realtime updates API (https://developers.facebook.com/docs/reference/api/realtime/) to capture when new friendships are made.
I just tried it with "order by mutual_friend_count desc" and it worked. So the query needs to be:
SELECT first_name,uid FROM user WHERE contains('pete') order by mutual_friend_count desc
Can someone tell me why this works:
SELECT name FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1=me()) AND strpos(lower(name),"jo") >=0
however this does not:
"SELECT url, id, type, site FROM object_url WHERE strpos(lower(url), 'sephora') >= 0"
When I put it in http://developers.facebook.com/docs/reference/rest/fql.query/
I get this response:
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
however "url" in indeed indexable.
any thoughts? I've already scoured stackoverflow but no answers found.
Site isn't indexable, it's only selectable. It doesn't have an * next to it here https://developers.facebook.com/docs/reference/fql/object_url/
you need to use url or id as the indexable column, so basically one of those needs to be in your where clause.
FQL != SQL You can't a a WHERE on any column you want. Not surprising considering the performance required with so many concurrent writers, I mean, one person in every ten in the world has signed up.
The problem in the second example is that a field used as a parameter in one of the string functions loses its indexability. It has to be the column itself.
I have a problem to solve.
I want to query all the events and I want to find the specific string.
The FQL code is like the following:
SELECT eid, name, location, start_time, end_time FROM event WHERE strpos(lower(location),'test') >=0
When I used this FQL code,it always occurred error.
The error message is "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"
Please,give me your point of views~thank you :)
Well, the error message is clear:
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
So simply your approach won't work.
EDIT:
To further explain why this is not possible:
Facebook deals with "over than 900 million objects that people interact with (pages, groups, events and community pages)". reference.
So basically giving you (all App devs) the ability to search ALL pages, events, groups...etc will definitely bring the system down. This is why these "indexible" fields are selected carefully.
For instance, if you want to search events by "location" then these events should be "somehow" related to your application. Like created by your App for example, and you should have their ids stored somewhere so that something like this would work:
SELECT eid, name, location, start_time, end_time FROM event WHERE
strpos(lower(location),'test') >=0 AND eid IN (ids_from_your_db)
I'm trying to develop a search for people by name feature using the Facebook API.
I'm trying this FQL query:
SELECT uid, username, name, pic_square FROM user WHERE strpos(name, 'Alfredo Artiles') >= 0
But I get an "Your statement is not indexable. The WHERE clause must contain an indexable column." error.
I also tried to add a "and uid > 0" condition, but that didn't work too.
Any idea?
SELECT uid, username, name, pic_square FROM user WHERE contains('Alfredo Artiles')
I have no idea why it works, as it violates the "at least and indexable field in WHERE", but it does.
EDIT: this is where I read it: link
later edit
Ok, sorry for the mistake regarding strpos, I didn't remeber it existence last time i checked the fql docs. The thing about it is that it can be used just in certain cases. You need to have a primar indexable column in your where clause and a second condition with strpos (at least this is how I succeded using it). For example:
SELECT actor_id, message FROM stream WHERE source_id = me() AND strpos(message, 'stuff') > 0 limit 50
I hope this clarifies a little bit the confusion with this function.
U need to specify the uid in where clause fetch details in facebook user table. we don't get the the all user details.here get the details of currently logged in user
"SELECT name FROM user WHERE uid IN(SELECT uid2 FROM
friend WHERE uid1 = me()) AND strpos(name,'Alfredo Artiles') >=0"
YES, YOU CAN!!!
Try to search in profile table, instead of user table. In profile table, the name field is indexable, so your statement would have to change only a bit:
SELECT id, username, name, pic_square FROM profile WHERE contains('alfredo artiles') and type='user'
Contains is not case-sensitive while strpos is. You could still use lower and strpos, but you would also have the problem of special characters. Contains is the solution.
You can find all fields of profile table in facebook doc:
Hope it helps!