OBJECT_VALUE Pseudocolumn
The OBJECT_VALUE pseudocolumn returns system-generated names for the columns of an object table, XMLType table, object view, or XMLType view. This pseudocolumn is useful for identifying the value of a substitutable row in an object table and for creating object views with the WITH OBJECT IDENTIFIER clause.
Note:
In earlier releases, this pseudocolumn was called SYS_NC_ROWINFO$. That name is still supported for backward compatibility. However, Oracle recommends that you use the more intuitive name OBJECT_VALUE.
See Also:
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object_table and object_view_clause for more information on the use of this pseudocolumn
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Oracle Database Object-Relational Developer's Guide for examples of the use of this pseudocolumn