ORA-02331: cannot create constraint on column of datatype string

ORA-02331: cannot create constraint on column of datatype string
Cause: An attempt was made to create a constraint on a column posessing a non-constrainable datatype -- VARRAY, nested table, object, LOB, FILE, or REF.
Action: Change the column datatype, or remove the constraint.

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小智 2018-08-30 16:37

ORA-02331：不能在数据类型字符串的列上创建约束,
.原因：试图在指定非约束数据类型为VARRAY，嵌套表，对象，LOB，FILE或REF的列上创建约束。,
.操作：更改列数据类型，或删除约束。,
.

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ORA-02331: cannot create constraint on column of datatype string

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