Computer Science · Database Management Systems
Which of the following SQL expressions evaluates to TRUE, according to SQL-99 standards?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1NULL IS NULL returns FALSE
- 2NULL >= NULL returns UNKNOWN
- 3NULL <= NULL returns UNKNOWN
- 4NULL IS NULL returns TRUE✓
Correct answer
NULL IS NULL returns TRUE
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