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https://www.cnblogs.com/2bjiujiu/p/9063864.html Error:IndexError: list index out of range Where? 对Python中有序序列进行按索引取值的时候,出现这个异常 Why? 对于有序序列: 字符串 str 、列 阅读全文
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I think Jonathan Lewis has explained the algorithm before, but it's alsosomething that we have investigated here.The algorithm (ignoring some details) 阅读全文
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http://viralpatel.net/blogs/oracle-index-skip-scan/ in 11g the same sql use index skip scan but in 10g it use index rang scan ,it seem the same sql ,1 阅读全文