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575 alter table books add secondauthor char100 17811

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Unformatted text preview: s SET SecondAuthor char(100) 1.502% UPDATE books SET SecondAuthor char(100) 2.575% ALTER TABLE books ADD 'SecondAuthor' char(100) 17.811% Unanswered • 77.897% 0.215% Question 4: Multiple Choice Kai Zhao 5/3/12 11:19 AM Comment [6]: Field names are not strings and should not be in quotes Average Score 1.56223 points From the table named books (shown below), I would like to delete entries with Price > 20 and UsedPrice > 15. Which of the following queries should I use? Correct Percent Answered DELETE FROM books WHERE...
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