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常用Sql - 数据库(内核) - 清泛网 - 专注C/C++内核技术

常用Sqlmysql:drop table if exists tablename;不能写成drop table tablename if exists tablename;mysql:建立索引SqlCREATE TABLE t...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...
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Mysql substr和Oracle substr区别 - 数据库(内核) - 清泛网 - 专注C/C++内核技术

Mysql substr和Oracle substr区别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)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)Mysql Orac...
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MongoDB.Driver.MongoConnectionException: Unable to connect to the prim...

MongoDB.Driver.MongoConnectionException: Unable to connect to the primary memberMongoDB Driver MongoConnectionException: Unable to connect to the primary member of the replica set: Too many thread MongoDB.Driver.MongoConnectionException: Unable to connect to the primary member of the replica set: ...
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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++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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【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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Linux Shell脚本参数获取方法 - 脚本技术 - 清泛IT社区,为创新赋能!

$0 (脚本名),$1-$9 参数$# 参数个数(脚本名除外) $? 取上个命令退出码(exit xx, 函数return xx)一般0成功,1失败 #!/bin/sh echo 'file name:' $0 echo 'param num: ' $# if [ $# -gt 1 ]; then echo 'the second param:' $2 fi 复制代码./param.sh file name: ./param.sh...
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svn提交文件夹失败 svn: File not found: transaction... - 环境配置 - 清...

在svn commit时报错,显示: Transmitting file data ........svn: Commit failed (details follow): svn: File not found: transaction '2-9', path '/src/xxx' 原因:svn没有被版本化,可能是由于目录位置变更,服务器配置变更等等。 解决方法:整个目录删除...
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一款IP:端口监控工具 服务器端口监控工具[附源码] - C++ UI - 清泛IT社区...

...可手动刷新。 支持连接异常报警(PC蜂鸣器、自定义wav文件)。 软件下载:http://www.tsingfun.com/html/2016/soft_0602/74.html 源码下载: 主要代码请参考:《mfc telnet 端口,代码实现、不调用telnet.exe》 表格采用GridCtrl(Demo...
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SHFileOperation 这个API函数怎么用起来结果飘忽不定? - c++1y / stl - 清...

...失败。 解决: 改用C++FindNextFile,支持 * 通配符查找文件,核心代码如下: WIN32_FIND_DATA FindFileData; char szCurPath[MAX_PATH + 1] = { 0 }; GetCurrentDirectory(MAX_PATH, szCurPath); CString findFileName; findFileName.Format("%stest*.txt", szCurPath); HAND...
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SVN 报错:Unable to create pristine install stream - 更多技术 - 清泛网 - 专注C/C++内核技术

...er.Creating thetmpfolder manually resolved the issue.解决方法:在.svn文件夾下手动新建文件夾tmp即可。Looking at my hard disk, I saw that there's no tmp folder inside my .svn folder. Creating the tmp folder manually resolved the issue. 解决方法:在.svn文件夾下手动...