unpivot - Dynamic unpivoting in Oracle -

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i create view unpivots wide table. this:

create view mylongtable  select *   mywidetable unpivot (value parameter in (             param1,             param2,             [continues ~200 entries] ));

now, list param1, param2, ... should calculated dynamically. easiest way this? inner select won't work, unfortunately. easiest me, because have params stored in table.


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