In Adobe Campaign, which of the following is NOT a prerequisite for computing aggregates?

The reasoning for identifying that grouping by every column is not a prerequisite for computing aggregates lies in the flexibility of SQL syntax, especially as utilized in Adobe Campaign. When working with aggregate functions, you can group by specific columns that are necessary for your analysis, rather than being required to group by every single column in your dataset.

Group by clauses are used primarily to define how the aggregation occurs, allowing users to summarize data across specified dimensions while aggregating other data columns. It is perfectly acceptable to have aggregates calculated without requiring every column to be included in the group by clause. This enables more nuanced analyses and allows for the computation of aggregates in a way that is contextually relevant to the needs of the report or analysis being conducted.

In contrast, adhering to valid SQL syntax, specifying at least one aggregate function, and ensuring data type compatibility are essential as they directly affect the ability to execute queries correctly and achieve meaningful results. Each of these elements facilitates a functional query, while grouping on every column does not add necessary value to the computation of aggregates, making this option the one that is not required.