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Handling null fields in SQL queries

说明：  sqlite的最新源码 This ZIP archive contains preprocessed C code for the SQLite library as individual source files. It is strongly recommended that the amalgamation above be used instead of this package(sqlite latest source This ZIP archive contains preprocessed C code for the SQLite library as individual source files. It is strongly recommended that the amalgamation above be used instead of this package)

此demo包含vc操作Access数据库的链接、以及增删改查的基本操作，均提供的有接口，方便用户操作，并且提供了一些模糊查询语句供用户参考~~(This demo contains the Access database, the link vc operations, as well as additions or deletions to change the basic operation of search are provided with interfaces, user-friendly operation, and provides a number of fuzzy query for the user' s reference ~ ~)

说明：  网络测试系统,很实用的一个源码,很有参考价值,下载试试,多学习哦(Network test systems, it is a source of practical, useful reference, download a try, more to learn Oh)

通过引用redis基础类库，实现对redis的读取和写入操作。例子比较初级。(By referring to the redis base class library, we can read and write redis. The example is more elementary.)

说明：  小巧的天气预报实时显示系统，采用GDI+技术开发，实现了基本且简单的功能，能在图片上实时显示温度/气温等天气预报情况，并能进行数据的维护更新。小巧的天气预报实时显示系统，采用GDI+技术开发，实现了基本且简单的功能，能在图片上实时显示温度/气温等天气预报情况，并能进行数据的维护更新。(compact real-time weather display system using GDI technology development, achieve the basic and simple functions, in real-time pictures show that the temperature/weather conditions such as temperature, and for the maintenance and update of data. The compact, real-time weather system, using GDI technology development, achieve the basic and simple functions, in real-time pictures show that the temperature/weather conditions such as temperature, and for the maintenance and update of data.)

连接access数据库实例，简单的操作access数据库(Connecting access database instance)

 职责描述：，系统信息设计，学生出操考勤管理、学生上课考勤管理、学生参加活动考勤管理，学生寝室考勤管理，综合统计与查询等六大模块。  项目简述：该系统利用MFC框架 Excel工具开发，来实现学生考勤管理。()

利用MFC开发的数据库系统，用的是微软的Access，有详细的链接数据库的代码。(Use of MFC development of database systems, using Microsoft Access, there are more links to the database code.)

这是一款用MFC ADO编写的数据库软件，它可以实现对ACCESS数据库的打开，添加，修改，保存，排序得一系列的功能。它利用ListCtl进行显示(This is a MFC ADO with the preparation of the database software, it can be open to the ACCESS database, add, modify, save, sort a series of functions. It uses ListCtl display)