首先，hive本身有一个UDF，名字是datediff。我们来看一下这个日期差计算的官方描述，（下面这个是怎么出来的）：hive> desc function extended datediff;OKdatediff(date1, date2) - Returns the number of day...
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其他好文 时间：
2015-03-11 23:18:48
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标题：Number of 1 Bits通过率：40.0%难度： 简单Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming ...
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其他好文 时间：
2015-03-11 21:31:23
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121
ORA-01427: 单行子查询返回多个行sql语句如下：select h.operator, to_char(h.operate_tm, 'yyyy-mm-dd hh24:mi:ss') operate_tm, (select t.res_label name from sysmngdba.res...
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数据库 时间：
2015-03-11 19:17:22
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208
Number of 1 BitsWrite a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For exampl...
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其他好文 时间：
2015-03-11 10:48:09
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123
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For example, the 32-bit in...
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其他好文 时间：
2015-03-11 00:28:52
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168
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For example, the 32-bit in...
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其他好文 时间：
2015-03-10 19:15:05
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150
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For example, the 32-bit in...
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其他好文 时间：
2015-03-10 19:12:29
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126
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For example, the 32-bit in...
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其他好文 时间：
2015-03-10 12:02:17
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138
Number of 1 BitsWrite a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For exampl...
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其他好文 时间：
2015-03-10 12:02:10
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112
ChildObjects:Returns the collection of child objects contained within the object.F1帮助解释：返回当前调用对象的所有子对象这种解释很抽象，下面我们来说一种场景，比如page对象，一个页面有100个button按钮需要一...
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其他好文 时间：
2015-03-09 17:26:48
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161
