PLS-00338：unable to resolve "string" as a column or row expression
错误码
错误描述：unable to resolve "string" as a column or row expression
错误原因：You have a reference to a name that could not be resolved as a column or row expression. This occurred in an update or insert statement involving an object-table.
解决方法：If this is an update statement and you intended to code this as a column reference, fix it as such. If you intended to code this as a row expression, change this to refer to an alias of an object-table.
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