FQL in the SDK 3.0 Beta for iOS
[[[FBRequest alloc] initWithSession:...
                         restMethod:...
                         parameters:...
                         HTTPMethod:...]
 startWithCompletionHandler:...];

FBRequest *fql = [FBRequest requestForGraphPath:@"fql"];
[fql.parameters setObject:@"SELECT uid, name, pic_square FROM user WHERE uid = me()"
                          @"OR uid IN (SELECT uid2 FROM friend WHERE uid1 = me())"
                   forKey:@"q"];

[fql startWithCompletionHandler:^(FBRequestConnection *connection,
                                  id result,
                                  NSError *error) {
    if (result) {
        NSLog(@"result:%@", result);
    }
}];

FBRequestConnection *conn = [[FBRequestConnection alloc] init];
[conn addRequest:fqlRequest1 completionHandler:^(FBRequestConnection *connection,
                                                 id result,
                                                 NSError *error) {
    if (result) {
        NSLog(@"result:%@", result);
    }
}];

[conn addRequest:fqlRequest2 completionHandler:^(FBRequestConnection *connection,
                                                 id result,
                                                 NSError *error) {
    if (result) {
        NSLog(@"result:%@", result);
    }
}];

[conn start];