Multiple choice technology databases

SELECT ROUND(TRUNC(MOD(1600,10),-1),2) FROM dual; What will be displayed?

  1. 0

  2. NULL

  3. 0.1

  4. NA
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A Correct answer
Explanation

To solve this question, the user needs to understand the functions used in the SQL query:

  • MOD: returns the remainder of a division operation
  • TRUNC: truncates a number to a specified number of decimal places
  • ROUND: rounds a number to a specified number of decimal places

Now, let's evaluate the given query step by step:

  • MOD(1600,10) returns the remainder of 1600 divided by 10, which is 0.
  • TRUNC(0,-1) truncates 0 to the nearest 10th place, which is still 0.
  • ROUND(0,2) rounds 0 to 2 decimal places, resulting in 0.

Therefore, the correct answer is:

The Answer is: A. 0

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