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标题: ORA-02442: Cannot drop nonexistent unique key [打印本页]

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作者: admin    时间: 2016-7-22 10:52
标题: ORA-02442: Cannot drop nonexistent unique key
ORA-02442: Cannot drop nonexistent unique key
Cause: alter table drop unique (<col list>) - unique specification does not exist.
Action: make sure column list for unique constraint is correct.

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