Which of these is not a comment specifying construct?

Solution (By Examveda Team)

This question asks about ways to write comments in MySQL. Comments are like notes in your code that the computer ignores. They help you explain what your code does, making it easier to understand.

Let's look at the options:

Option A: #
This is a valid way to write a comment in MySQL. Anything after the '#' symbol on the same line is ignored by the database.

Option B: /* */
This is another way to write comments. You can put comments between the '/*' and '*/' symbols. This allows for multi-line comments.

Option C: —
This is a valid way to write a comment in MySQL. Anything after the '--' symbols on the same line is ignored by the database.

Option D: !#
This is NOT a valid way to write a comment in MySQL. MySQL doesn't recognize '#!' as a comment symbol.

Therefore, the answer is Option D: !#