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What will be the output of the following MySQL statement "false AND Null"?
Answer & Solution
Correct Answer:
Option
B
This question is about how MySQL handles logical operations with NULL values. Let's break it down:
* AND is a logical operator. It checks if both sides of the statement are TRUE.
* False is a boolean value, meaning it represents either TRUE or FALSE.
* NULL is a special value in MySQL that means "unknown" or "missing". It's not TRUE or FALSE, but rather a placeholder.
Here's how MySQL treats "false AND NULL":
1. MySQL considers any operation involving NULL as "unknown".
2. If any part of an AND operation is "unknown," the entire result is "unknown" (or NULL).
Therefore, the correct answer is Option B: Null
In simple terms, if you're trying to combine something known to be FALSE with something unknown (NULL), the result is also unknown (NULL).
* AND is a logical operator. It checks if both sides of the statement are TRUE.
* False is a boolean value, meaning it represents either TRUE or FALSE.
* NULL is a special value in MySQL that means "unknown" or "missing". It's not TRUE or FALSE, but rather a placeholder.
Here's how MySQL treats "false AND NULL":
1. MySQL considers any operation involving NULL as "unknown".
2. If any part of an AND operation is "unknown," the entire result is "unknown" (or NULL).
Therefore, the correct answer is Option B: Null
In simple terms, if you're trying to combine something known to be FALSE with something unknown (NULL), the result is also unknown (NULL).
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