1、single-row function指一行数据输入,返回一个值的函数。 常见的有字符函数(如:substr)日期函数(如:months_between)数字函数(如:MOD)转换函数(如:to_char)通用函数(如:NVL)2、mutil-row function指多行数据输入,返回一个值的...
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其他好文 时间:
2015-07-27 12:57:52
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153
Compromise
Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %llu
Submit Status Practice UVA 531
Appoint description:Description
Download as PDFIn a few months the European Currency...
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其他好文 时间:
2015-07-24 18:22:32
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Full Channel have been completely spending the application in the face much more many months to 're looking to cling into a bit of which will border w...
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其他好文 时间:
2015-07-20 18:16:48
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来源: http://developer.actuate.com/community/forum/index.php?/topic/36323-months-and-quarters-group-issue/
不规则月份统计:如果起始时间是2014-01-10,则将2014-01-10到2014-02-09作为一组,将2014-02-10到2014-03-9作为一组。如果起始...
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其他好文 时间:
2015-07-17 12:15:23
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I've been working for the past 15 months on repairing my rusty math skills, ever since I read a biography of Johnny von Neumann. I've read a huge stac...
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其他好文 时间:
2015-07-06 15:34:47
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--加法 select sysdate,add_months(sysdate,12) from dual; --加1年 select sysdate,add_months(sysdate,1) from dual; --加1月 select sysdate,to_...
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数据库 时间:
2015-07-05 10:49:03
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127
SELECT to_char(add_months(trunc(SYSDATE, 'yyyy'), -12 * (rownum - 1)), 'YYYY') Y...
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其他好文 时间:
2015-07-04 15:16:28
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-- 取季初那一天 select date_trunc( 'quarter',cast('20150820' as date)) -- 取季末那一天 select add_months(date_trunc( 'quarter',cast('20150820' as date)) + INTER.....
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数据库 时间:
2015-07-01 11:59:08
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200
原文 I have just received a letter from my brother, Tim. He is in Australia. He has been there for six months. Tim is an engineer. He is working for a big firm and he has already visited a great nu...
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其他好文 时间:
2015-06-26 15:11:52
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137
Oracle查询日期所属月份的天数Oracle查询日期操作可以实现许多我们需要的日期,比如可以实现Oracle查询日期所属月份的天数,下面就让我们一起来了解一下该方法的实现。Oracle查询日期所属月份的天数:select to_char(last_day(to_date('20080901','y...
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其他好文 时间:
2015-06-26 10:33:21
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189