已知关系R如图所示。试用SQL语句实现下列操作:(1)按属性A分组,求出每组中在属性C上的最大值和最小值,且将它们置于视图RVE中。(2)在视图RVE中查询属性A=‘98’的记录。
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‘The Inimitable Rose’, being Qur'anic sajc from Sūrat al-Duhā to Sūrat al-Nās (Q. 93–114) in English Rhyming Prose 作者: Toorawa Shawkat M.出版社: Edinburgh University Press ISSN: 1755-1730 来源: Journal of Qur’anic Studies, 卷8, 期2, 2006-10, 页码 : 143-156 ...
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