SAP-HANA查询执行显示语法错误。谁能看看这个

Question

我正在尝试执行此查询：

DELETE from TABLE1A
WHERE X IN
   (SELECT A.X FROM
   (SELECT X, r1.Y, r2.Y, DENSE_RANK() OVER (PARTITION by r1.Y, r2.Y ORDER by X) as RANK
       FROM TABLE1B r0
       INNER JOIN TABLE1A r1 on r0.X = r1.X
       INNER JOIN TABLE1A r2 on r0.X = r2.X
       WHERE r1.Y = foo and r2.Y = bar
    ) AS A  WHERE A.RANK > 1
   );

执行后，出现错误：SQL错误[268] [HY000]：SAP DBTech JDBC：[268]（在63）：列含糊不清：X

该查询可能出什么问题了？

Answer 1

表R1和R2似乎都有名为X的列，但是在窗口函数的ORDER BY部分中，您没有指定应使用这些列中的哪一个；错误消息。