ORA-30484 是一个 Oracle 数据库错误代码,它表示在使用分析函数(如 ROW_NUMBER(), RANK(), DENSE_RANK() 等)时,缺少必要的窗口规范(Window Specification)。以下是关于这个错误的详细解释和解决步骤: 1. 错误含义 ORA-30484 错误表明在 SQL 查询中使用了分析函数,但没有提供必要的 OVER() 子句来指定窗口规范...
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ORa-30484 missing window specification for this function Cause: All window functions should be followed by window specification, like <function>(<argument list>) OVER (<window specification>) ORA-30485 missing ORDER BY expression in the window specification Cause: Either the ORDER BY expression ...