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How can we delete duplicate rows in a table?


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More Oracle General Interview Questions

5. Display full details from the ORDER_LINE table where the item number is (first condition) between 1 and 200 (no > or < operators) OR the item number is greater than 1000 AND (second condition) the item cost is not in the list 1000, 2000, 3000 OR the order number is not equal to 1000.

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According to oracle specification VIEW is a object. OBJECT that means anything stored in the oracle database that has the physical existence.why VIEW doesn't take memory in oracle database, but it is treated as a object ?Please explain ?

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