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[下载]Excel 2003 Power Programming With VBA中文版 attachment Excel pine888 2007-10-16 57 26407 huangchuanqu 2014-5-11 19:37:48
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Time Series With Long Memory(下) attachment 计量经济学与统计软件 lyslz 2007-3-14 4 4222 celine-tao 2011-11-15 17:41:09
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Statistics - Springer-Verlag - Modern Applied Statistics With S attachment 计量经济学与统计软件 iamaminer 2005-9-28 2 2360 Lao9 2011-10-10 01:37:10
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分享 DB2 SQL讲义(三)
daydayup81 2013-1-19 10:31
DB2有很多特殊寄存器,比如: CURRENT SERVER CURRENT USER CURRENT SCHEMA CURRENT ISOLATION CURRENT DATE CURRENT TIME CURRENT TIMESTAMP 实时记录了很多数据。 查询可以使用公共表表达式,该使用以WITH开头,然后使用查询定义了一张表,在之后的select from语句中可以使用这张临时定义的表。 其中: WHERE语句中包含谓词判断,一般是: 另外,常见的谓词还包括 BETWEEN \ EXISTS \ IN \ LIKE,有些常与子查询一起配合使用。 常用的逻辑运算符是 AND / OR。常用的类型转化函数是 CAST(**** as ****)。
个人分类: DB2 SQL|31 次阅读|0 个评论
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