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C# 操作MongoDb插入、更新、查询 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

C# 操作MongoDb插入、更新、查询Mongo连接字符串形式:mongodb: 127.0.0.1:27017 插入或更新一条记录BsonDocument doc = new BsonDocument();...MongoServer serv...Mongo连接字符串形式:mongodb://127.0.0.1:27017 // 插入或更新一条记录 BsonDocument doc = new Bso...
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Plsqldev SQL含中文查无结果 - 爬虫/数据库 - 清泛IT社区,为创新赋能!

设置环境变量:NLS_LANG 值为:SIMPLIFIED CHINESE_CHINA.ZHS16GBK
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MFC ComboBox控件如何在属性页中添加多项下拉数据? - C++ UI - 清泛IT社区...

如题。 运行效果:
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常用Sql - 爬虫/数据库 - 清泛IT社区,为创新赋能!

本帖最后由 zqp2013 于 2015-3-17 22:06 编辑 mysql:drop table if exists tablename; 不能写成 drop table tablename if exists tablename; mysql:建立索引Sql CREATE TABLE tablename (   `ID`                 &nbs...
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Mysql substr和Oracle substr区别 - 爬虫/数据库 - 清泛IT社区,为创新赋能!

Oracle substr(字符串,开始索引、从0起,长度) Mysql substr或substring(字符串,开始索引、从1起,长度)
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【解决】mysql_real_connect: Can\'t connect to local MySQL server throu...

【解决】mysql_real_connect: Can't connect to local MySQL server through socket '/tmp/mysql.sock'cant-connect-to-local-mysql-server-through-socket-tmp-mysql-sockmysql_real_connect: Can& 39;t connect to local MySQL server through socket & 39; tmp mysql sock& 39;解决方法(挨个试):1、ln...
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ViewPager.setOffscreenPageLimit(0) doesn't work as expected

... protected boolean isVisible; /** * 在这里实现Fragment数据缓加载. * @param isVisibleToUser */ @Override public void setUserVisibleHint(boolean isVisibleToUser) { super.setUserVisibleHint(isVisibleToUser); if(getUserVisibleHint()) {...
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c++ boost库 序列化与反序列化 - C/C++ - 清泛网 - 专注C/C++及内核技术

....hpp" // const unsigned int SERIALIZATION_VERSION = 1; //保存结构体数据 template<typename TemplateStruct> int save(const TemplateStruct & templateStruct,const std::string &strFileName,const unsigned int version = SERIALIZATION_VERSION) { try { std::ofst...
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c++ boost库 序列化与反序列化 - c++1y / stl - 清泛IT社区,为创新赋能!

...pp&quot; // const unsigned int SERIALIZATION_VERSION = 1; //保存结构体数据 template&lt;typename TemplateStruct&gt; int save(const TemplateStruct &amp; templateStruct,const std::string &amp;strFileName,const unsigned int version = SERIALIZATION_VERSION) { &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;...