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db2像oracle一样使用hints(guidelines)
db2像oracle一样使用hints(guidelines)C:\DB2>more f3.sqlSELECT d.DEPTNAME,e.FIRSTNME,e.LASTNAMEFROM DEPARTMENT D,EMPLOYEE EWHERE d.DEPTNO = e.WORKDEPT AND e.EMPNO LIKE '0001%' /* */;C:\DB2>C:\DB2>db2expln -d...
分类:数据库   时间:2015-12-03 02:16:43    阅读次数:348
一些sql语句的常用总结(重要)
select primary_flag from tc_contact where primary_flag !=0select dept_id,dept_name,tree_level,tree_path from tc_department where org_id=1 and stop_fla...
分类:数据库   时间:2015-11-09 12:10:55    阅读次数:283
Sensor Fusion-based Exploration in Home Environments using Information, Driving and Localization Gains(基于传感器融合的使用信息、驾驶和位置增益在家庭环境中的探索)
Authors: Joong-Tae Park, Jae-Bok SongDepartment:Department of Mechanical Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul, South Korea(机...
分类:其他好文   时间:2015-11-05 10:30:41    阅读次数:274
产品——仓库表查询
数据库说明:本次查询采用的是MYSQL一、建表1.1 需建立的表及字段员工表E(employeeID,name,department):员工编号,姓名,部门;产品表P(prodectID,name,model,size,color):产品编号,产品名称,型号,尺寸,颜色;仓库表W(warehouse...
分类:其他好文   时间:2015-11-03 19:31:41    阅读次数:231
Swift 2.0学习笔记(Day 26)——可选链
原创文章,欢迎转载。转载请注明:关东升的博客  在Swift程序表达式中会看到问号(?)和感叹号(!),它们代表什么含义呢?这些符号都与可选类型和可选链相关,下面来看看可选链。 可选链:类图:它们之间是典型的关联关系类图。这些类一般都是实体类,实体类是系统中的人、事、物。Employee通过dept属性与Department关联,Department通过comp属性与Company关联。下面看示例...
分类:编程语言   时间:2015-10-23 12:03:14    阅读次数:232
MySQL逻辑备份与恢复
备份:mysqldump -uroot -p yyzc department > /home/admin/yyzc_backup.sql恢复:mysql -uroot -p yyzc all.sql备份数据库testmysqldump -uroot -p test > test.sql备份数据库t....
分类:数据库   时间:2015-10-22 12:20:48    阅读次数:281
leetcode-184-Department Highest Salary 优化记录
题目TheEmployeetable holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id.+----+-------+--------+--...
分类:其他好文   时间:2015-10-20 21:22:58    阅读次数:231
【UVa 208】Firetruck
The Center City ?re department collaborates with the transportation department to maintain mapsof the city which re?ects the current status of the cit...
分类:其他好文   时间:2015-10-05 18:18:38    阅读次数:246
学习笔记之--047.第二章 限制和排序数据
语法:select*|{[DISTINCT]column|expression[alias],...}FROMtable[WHEREcondition(s)];selectemployee_id,last_name,job_id,department_idfromemployeeswheredepartment_id=90;=>>=<<=<>BETWEEN...AND...IN(set)likeisnullselectlast_name,salaryfromemploy..
分类:编程语言   时间:2015-09-28 19:27:56    阅读次数:196
Database Primary key and Foreign key [From Internet]
DatabasePrimary key and Foreign key --Create Referenced Table CREATE TABLE Department ( DeptID int PRIMARY KEY, --define primary key Name varchar (50....
分类:数据库   时间:2015-09-17 08:49:02    阅读次数:223
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