sql - ORA-00907: 缺少右括号

Question

我收到错误“ORA-00907：缺少右括号”，但我检查过所有括号都在那里，所以我很难过。

我的查询是

SELECT 
  SUM(score) as score, 
  facebook_id, 
  firstname, 
  lastname, 
  dense_rank(score) 
WITHIN GROUP ( ORDER BY score ) as rank_db  
FROM 
  (
    SELECT DISTINCT *
    FROM 
      (
        SELECT *  
        FROM fanta_score 
        ORDER BY score desc
      ) as f 
    GROUP BY 
      facebook_id, game_id
  ) as g 
GROUP BY facebook_id
ORDER BY score DESC, created_at
LIMIT 50 

我绝不是 Oracle 专家，但我必须使用它，因为它必须位于托管环境中。

Answer 1

Oracle 无法识别 LIMIT 命令。并且应该使用ROWNUM而不是Limit。

SELECT 
  SUM(score) as score, 
  facebook_id, 
  firstname, 
  lastname, 
  dense_rank(score) 
WITHIN GROUP ( ORDER BY score ) as rank_db  
FROM 
  (
    SELECT DISTINCT *
    FROM 
      (
        SELECT *  
        FROM fanta_score 
        ORDER BY score desc
      ) as f 
    GROUP BY 
      facebook_id, game_id
  ) as g
WHERE ROWNUM = 50 
GROUP BY facebook_id
ORDER BY score DESC, created_at