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中关村在线
16 年
Oracle11g SQL新功能pivot/unpivot_服务器知识学堂-中关村在线
但现在这话就说不出口了,因为11g的SQL自己就带这个了。 11g在SELECT语句中新加了关键词PIVOT和UNPIVOT,用这两个关键词,重写上面的两个查询,就变成这个样子的了: 行变列: ...
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