SQL执行错误: SELECT e.* FROM `Favorite` as f , `Question` as e WHERE f.UserId= AND f.FavoriteId=e.QuestionId AND f.`Type`='1' AND f.Status=1 LIMIT 0,10
错误代码: 1064
错误信息: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND f.FavoriteId=e.QuestionId AND f.`Type`='1' AND f.Status=1 LIMIT 0,10' at line 2