在进行查询操作时，我们通常需要查询两个关联表的数据，我们可以使用where语句进行查询，如：select Emp.E_Id,Company.C_OraName from Emp,Company where Companey.C_Id=Emp.C_Id 但是我们往往会碰到比较复杂的语句，这时候使...
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数据库 时间：
2014-08-11 17:28:42
阅读次数：
264
Description
J
Skyscraper
The Build n' Profit construction company is about to build its tallest building. It will be huge, the tallest building in the world by a wide marg...
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其他好文 时间：
2014-08-11 15:07:42
阅读次数：
236
Description
KEY Inc., the leading company in security hardware, has developed a new kind of safe. To unlock it, you don't need a key but you are required to enter the correct n-digit code on a keyp...
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其他好文 时间：
2014-08-09 00:16:16
阅读次数：
351
Description
Word puzzles are usually simple and very entertaining for all ages. They are so entertaining that Pizza-Hut company started using table covers with word puzzles printed on them, possi...
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其他好文 时间：
2014-08-08 16:07:46
阅读次数：
193
建表语句：DROP TABLE IF EXISTS `t_company`;CREATE TABLE `t_company` ( `companyId` int(10) unsigned NOT NULL AUTO_INCREMENT, `companyName` varchar(30) NOT.....
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系统相关 时间：
2014-08-08 15:21:56
阅读次数：
332
Not only will you get the results within a few seconds, the websites of the company will have all the information you need to decide for yourself. The...
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其他好文 时间：
2014-08-07 12:36:49
阅读次数：
260
Problem DescriptionToday the company has m tasks to complete. The ith task need xi minutes to complete. Meanwhile, this task has a difficulty level yi...
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其他好文 时间：
2014-08-06 18:03:01
阅读次数：
329
DescriptionCutting SticksYou have to cut a wood stick into pieces. The most affordable company, The Analog Cutting Machinery, Inc. (ACM), charges mone...
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其他好文 时间：
2014-08-06 01:43:50
阅读次数：
254
Description
LogLoader, Inc. is a company specialized in providing products for analyzing logs. While Ikki is working on graduation design, he is also engaged in an internship at LogLoader. Among ...
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其他好文 时间：
2014-08-03 20:37:35
阅读次数：
275
You have decided to start up a new social networking company. Other existing popular social networksalready have billions of users, so the only way to...
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其他好文 时间：
2014-08-02 12:32:54
阅读次数：
276
