Multiple choice

What is the output of the below query?

select rowid from dual

  1. 0

  2. 1

  3. AAAABBAAAAOhAAA

  4. AAAAB0AABAAAAOhAAA

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This answer is correct. Oracle generates a unique number, which is rowid from dual, i.e. AAAAB0AABAAAAOhAA.  RowID is an unique value for each record in a table.