PLS-00725: type string must be a supertype or subtype of the TREAT expression

PLS-00725: type string must be a supertype or subtype of the TREAT expression

Cause: In TREAT(lamp;lt;lamp;nbsp;exprlamp;gt; AS lamp;lt;lamp;nbsp;typelamp;gt;), type must be a supertype or subtype of lamp;lt;lamp;nbsp;exprlamp;gt;.

Action: none

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