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Thanks, that makes me feel better. I've met developers like that and was even asked a trick question over MySQL and stored procedures years ago.

I will continue to learn for the sake of learning which I've always done - not so much for interviews but to learn how to solve problems in different ways.

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Also, in my personal experience, "I don't know" is a valid answer to those types of questions, as long as it is followed by an explanation of what your methodology would be to fill that gap.

I'm not afraid of not knowing an answer. If I don't know the answer its just an opportunity to learn. Each interview I've been in has produced topics or technologies I do not know. I research each and every one after the interview.

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