COF-C02 · Question #461
COF-C02 Question #461: Real Exam Question with Answer & Explanation
The correct answer is C: ORDER BY. Valid sub-clauses to the OVER clause for a window function in SQL are: C . ORDER BY: This clause specifies the order in which the rows in a partition are processed by the window function. It is essential for functions that depend on the row order, such as ranking D . PARTITION BY
Question
What are valid sub-clauses to the OVER clause for a window function? (Select TWO).
Options
- AGROUP BY
- BLIMIT
- CORDER BY
- DPARTITION BY
- EUNION ALL
Explanation
Valid sub-clauses to the OVER clause for a window function in SQL are: C . ORDER BY: This clause specifies the order in which the rows in a partition are processed by the window function. It is essential for functions that depend on the row order, such as ranking D . PARTITION BY: This clause divides the result set into partitions to which the window function is applied. Each partition is processed independently of other partitions, making it crucial for functions that compute values across sets of rows that share common characteristics. These clauses are fundamental to defining the scope and order of data over which the window function operates, enabling complex analytical computations within SQL queries.
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