Which operator would you use to compute the total numeric value of a column, ignoring NULLs?

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Multiple Choice

Which operator would you use to compute the total numeric value of a column, ignoring NULLs?

Explanation:
To get the total numeric value of a column while skipping missing data, use the aggregate function that sums all values. SUM adds up every non-NULL numeric entry in the column, so NULLs don’t affect the total. If there are no non-NULL values (or no rows), the result is NULL in most databases (you can wrap with COALESCE to show 0 if needed). The other options don’t produce a total: a maximum value, a minimum value, or an average, all of which summarize data differently rather than giving the overall sum.

To get the total numeric value of a column while skipping missing data, use the aggregate function that sums all values. SUM adds up every non-NULL numeric entry in the column, so NULLs don’t affect the total. If there are no non-NULL values (or no rows), the result is NULL in most databases (you can wrap with COALESCE to show 0 if needed).

The other options don’t produce a total: a maximum value, a minimum value, or an average, all of which summarize data differently rather than giving the overall sum.

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