<p><strong class="ql-size-huge">随机查询方法最优的一种方式。</strong></p><p><br></p><blockquote>SELECT id FROM&nbsp;</blockquote><blockquote>(SELECT id ROUND(COUNT(*)*RAND()*100) AS newno FROM book GROUP BY id) AS t</blockquote><blockquote> ORDER BY t.newno DESC LIMIT 10</blockquote><p><br></p>