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| Q. |
Which of the following will not raise error if not used? |
| A. | over clause |
| B. | order by clause |
| C. | partition by clause |
| D. | all of the mentioned |
| Answer» C. partition by clause | |
| Explanation: partition by clause is not mandatory and when you specify a column/set of columns with partition by clause then it will divide the result-set into record groups/partitions. | |
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