ORA-62235：PARTITION BY key in APPROX_RANK is not a subset of GROUP BY key.
错误码
错误描述：PARTITION BY key in APPROX_RANK is not a subset of GROUP BY key.
错误原因：The PARTITION BY key in the APPROX_RANK function was not a subset of the key in the GROUP BY clause.
解决方法：Use a subset of the key in the GROUP BY clause in the PARTITION BY key within the APPROX_RANK function.
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