What will be the output of the following MySQL statement "true OR Null"?
A. True
B. Null
C. False
D. None of the mentioned
Answer: Option A
Solution (By Examveda Team)
This question asks about how MySQL handles the logical OR operator (OR) when one of the values is NULL.Here's how it works:
* TRUE OR TRUE: The result is TRUE.
* TRUE OR FALSE: The result is TRUE.
* FALSE OR TRUE: The result is TRUE.
* FALSE OR FALSE: The result is FALSE.
* TRUE OR NULL: The result is TRUE.
* FALSE OR NULL: The result is TRUE.
In MySQL, NULL is considered unknown in logical operations.
The OR operator returns TRUE if at least one of the values is TRUE.
Since NULL is considered "unknown" in this case, the OR operator assumes it might be TRUE.
Therefore, "TRUE OR NULL" will evaluate to TRUE.
So the answer is Option A: True
Related Questions on MySQL Miscellaneous
How is communication established with MySQL?
A. SQL
B. Network calls
C. A programming language like C++
D. APIs
Which type of database management system is MySQL?
A. Object-oriented
B. Hierarchical
C. Relational
D. Network
Join The Discussion