Which aggregate function returns the maximum value in a column, excluding NULLs?

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Multiple Choice

Which aggregate function returns the maximum value in a column, excluding NULLs?

Explanation:
Finding the largest value in a column while ignoring NULLs is done with the MAX function. In SQL, aggregate functions ignore NULLs when computing their result, so only non-NULL values are considered, and MAX returns the greatest among them. This differs from MIN, which returns the smallest non-NULL value, and from AVG and SUM, which compute the average and total of the non-NULL values respectively. If every value in the column is NULL, MAX returns NULL. For example, with values 3, 7, NULL, 2, MAX yields 7.

Finding the largest value in a column while ignoring NULLs is done with the MAX function. In SQL, aggregate functions ignore NULLs when computing their result, so only non-NULL values are considered, and MAX returns the greatest among them. This differs from MIN, which returns the smallest non-NULL value, and from AVG and SUM, which compute the average and total of the non-NULL values respectively. If every value in the column is NULL, MAX returns NULL. For example, with values 3, 7, NULL, 2, MAX yields 7.

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