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Continue to ChatPop quiz: what would be the results of the following queries? https://code.openark.org/blog/mysql/pop-quiz-what-would-be-the-results-of-the-following-queries
Pop quiz: what would be the results of the following queries? https://code.openark.org/blog/mysql/pop-quiz-what-would-be-the-results-of-the-following-queries