Question

我正在尝试使用SQL Developer创建一个视图，但遇到了一个奇怪的错误。似乎缺少右括号，但我找不到哪里 - 你能帮我吗？

INPUT：

CREATE OR REPLACE VIEW MAST_SOMME_POINTS_CLUBS AS
  (SELECT C.NOM, SUM(R.POINTS) AS POINTS
  FROM MAST_CLUBS C 
    JOIN MAST_NAGEURS N USING(CLUB) 
    JOIN MAST_RESULTATS R USING(NRLIGUE)
  GROUP BY (C.CLUB, C.NOM)
  ORDER BY C.NOM);

输出：

Erreur commençant à la ligne: 1 de la commande -
CREATE OR REPLACE VIEW MAST_SOMME_POINTS_CLUBS AS
  (SELECT C.NOM, SUM(R.POINTS) AS POINTS
  FROM MAST_CLUBS C 
    JOIN MAST_NAGEURS N USING(CLUB) 
    JOIN MAST_RESULTATS R USING(NRLIGUE)
  GROUP BY (C.CLUB, C.NOM)
  ORDER BY C.NOM)
Rapport d'erreur -
Erreur SQL : ORA-00907: missing right parenthesis
00907. 00000 -  "missing right parenthesis"
*Cause:    
*Action:

Answer 1

请避免使用不必要的括号：

CREATE OR REPLACE VIEW MAST_SOMME_POINTS_CLUBS AS
   SELECT
      C.NOM,
      SUM(R.POINTS) AS POINTS
   FROM
      MAST_CLUBS C 
   JOIN
      MAST_NAGEURS N
      USING (CLUB) 
   JOIN
      MAST_RESULTATS R
      USING (NRLIGUE)
   GROUP BY
      C.CLUB, -- Is this intentional? It is not in your SELECT
      C.NOM
   ORDER BY NOM;

作为提示：保持代码干净利落，结构良好有助于避免许多问题。

SQL缺少右括号

1 个答案: