Description
You are working for Macrohard company in data structures department. After failing your previous task about key insertion you were asked to write a new data structure that would be able...
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其他好文 时间:
2015-07-08 21:04:04
阅读次数:
137
题目:TheEmployeetable holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id.+----+-------+--------+-...
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数据库 时间:
2015-06-29 16:27:28
阅读次数:
142
原文 http://www.cnblogs.com/tianxue/p/4493260.html这确实是一个真实的面试题,琢磨一下吧!知识不用,就会丢掉,我太依赖各种框架和dll了,已经忘记了最基本的东西。有多久没有写过SQL了,我已经不记得了。已知表信息如下:Department(depID,de...
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数据库 时间:
2015-06-29 16:25:17
阅读次数:
145
Oracle grouping和rollup简单测试SQL> select department_id,sum(salary) from employees where department_id in(10,30,90,100) group by department_id order by de...
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数据库 时间:
2015-06-25 17:21:28
阅读次数:
128
这些个词没有太大区别,有时候有些词是可以通用的,而有些用法则是随着地域时间的不同而变迁。一般说来,college译作“学院”,它是university (综合性大学)的一个组成部分,例如,一所综合大学里设有文学院、理学院、医学院等,故university往往是由多所较小的college合并而成。值得...
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其他好文 时间:
2015-06-24 12:49:00
阅读次数:
116
Department Top Three SalariesTheEmployeetable holds all employees. Every employee has an Id, and there is also a column for the department Id.+----+--...
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数据库 时间:
2015-06-24 00:32:49
阅读次数:
139
js/** * EasyUI DataGrid根据字段动态合并单元格 * @param fldList 要合并table的id * @param fldList 要合并的列,用逗号分隔(例如:"name,department,office"); ...
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Web程序 时间:
2015-06-23 13:20:04
阅读次数:
491
SQL面试题(1)create table testtable1(id int IDENTITY,department varchar(12))select * from testtable1insert into testtable1 values('设计')insert into testtab...
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数据库 时间:
2015-06-22 20:36:17
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178
1.PLAN_tablecolumnquery_planformata55columncardinalityformat99999columncostformat99999deletefromplan_table;setlines100setpages100setechoonEXPLAINPLANFORSELECT*FROMhr.employeesJOINhr.departmentsUSING(department_id);SELECTRTRIM(LPAD(‘‘,2*LEVEL)||RTRIM(operati..
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数据库 时间:
2015-06-21 23:59:06
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402
bout Sotirios-Efstathios ManeasSotirios-Efstathios (Stathis) Maneas is a postgraduate student at the Department of Informatics and Telecommunications ...
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编程语言 时间:
2015-06-19 21:30:06
阅读次数:
592