FQL查詢僅提取那些有生日的記錄。

Question

我想只抓取那些有指定生日的fb記錄，我不想要空記錄。我有以下查詢：

String fqlQuery = "{" + 
         "'friends':'SELECT uid2 FROM friend WHERE uid1 = me()'," + 
         "'friendinfo':'SELECT uid, name, pic_square, birthday FROM user WHERE uid IN" + 
         "(SELECT uid2 FROM #friends)'," + 
         "}"; 

它獲取的一切，我試過如下：

String fqlQuery = "{" + 
         "'friends':'SELECT uid2 FROM friend WHERE uid1 = me()'," + 
         "'friendinfo':'SELECT uid, name, pic_square, birthday FROM user WHERE uid IN" + 
         "(SELECT uid2 FROM #friends)'," + "AND birthday != null"+ 
         "}"; 

它不給我任何結果，什麼是這樣做的正確方法是什麼？

Answer 1

在FQL中，只需使用AND something來檢查something是否不爲空。

這裏是你的FQL查詢更正：

{ 
'friends':'SELECT uid2 FROM friend WHERE uid1 = me()', 
'friendinfo':'SELECT uid, name, pic_square, birthday FROM user 
       WHERE uid IN(SELECT uid2 FROM #friends) 
       AND birthday' 
} 

Java代碼：

String fqlQuery = "{" + 
         "'friends':'SELECT uid2 FROM friend WHERE uid1 = me()'," + 
         "'friendinfo':'SELECT uid, name, pic_square, birthday FROM user WHERE uid IN" + 
         "(SELECT uid2 FROM #friends) AND birthday'"+ 
        "}";