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      Question

      What is the output of this SQL snippet if the price

      column contains NULL values? SELECT SUM(price) FROM products;
      A SUM of all prices including NULL Correct Answer Incorrect Answer
      C NULL Correct Answer Incorrect Answer
      D Error Correct Answer Incorrect Answer
      E SUM of non-null prices Correct Answer Incorrect Answer

      Solution

      Aggregate functions like SUM() ignore NULL values.

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