文档解释
ORA-26754: cannot specify both one-to-one transformation function string and one-to-many transformation function string
Cause: Both a one-to-one transformation function and a one-to-many transformation function were specified for a rule.
Action: Remove either the one-to-one transformation function, or the one-to-many transformation function.
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ORA-26754错误是一个特定的Oracle数据库错误,表示不能同时指定一对一转换函数字符串和一对多转换函数字符串。这意味着当试图将一个已有类型(源)转换为另一个已有类型(目标)时,可以指定一对一转换函数字符串(Transformation Function String)或指定一对多转换函数字符串(Transformation Function String),但不能同时使用两个。