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MySQL query to get column names?
...lumn type, whether the column is nullable, max column size, character set, etc)...
Oh, and it's standard SQL (Whereas SHOW ... is a MySQL specific extension)...
For more information about the difference between SHOW... and using the INFORMATION_SCHEMA tables, check out the MySQL Documentation on I...
华为公司的新产品研发流程管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...要信息或是已知的也或是可知的，只是没有人提出正确的问题或没有人做出正确的决策而已。
研究表明，如果一个公司较早做出取消或调整的决定，那么在那些没有投入市场的产品上所浪费的便要减少许多。一流公司在计...
XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...get back to the C:\ Root directory - type cd/
type cd Drive:\Folder\Folder\etc to get to the folder where your .Html file is (or php, etc)
Check the path. type: path at the command prompt. You must see the path to the folder where python is located. For example, if python is in C:\Python27, then...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...资源的条件下保证程序的运作，ulimit 是我们在处理这些问题时，经常使用的一种简单手段。ulimit 是一种 linux 系统的内键功能，它具有一套参数集，用于为由它生成的 shell 进程及其子进程的资源使用设置限制。本文将在后面的...
从估值5千万到一无所有 90后的他感觉梦境一场 - 资讯 - 清泛网 - 专注C/C++...
...O2O现在还没到风口。宠物行业的根本不在这里，这是源头问题。”与此同时，他对爱狗团的方向也进行了调整。夏军原本做的是宠物O2O，类似于美团的团购模式，将买家导入到线下的商户。而他放弃了O2O做法，现在做的模式不像...
When to use self over $this?
...context (are we in an object-context already? Are we outside of an object? etc).
Apache Prefork vs Worker MPM
...te easily.
The setting for prefork, worker, or event is set in sudo nano /etc/httpd/conf.modules.d/00-mpm.conf (for CentOS 6.x/7.x/Apache 2.4).
# Select the MPM module which should be used by uncommenting exactly
# one of the following LoadModule lines:
# prefork MPM: Implements a non-threaded, p...
What are the disadvantages of using persistent connection in PDO
... (Apache for mod_php, the current FastCGI process if you're using FastCGI, etc), not at the PHP level, and PHP doesn't tell the parent process to let the connection die when the script terminates abnormally.
If the dead script locked tables, those tables will remain locked until the connection dies...
搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...可用mongodb集群（三）—— 深入副本集》搭建后还有两个问题没有解决：从节点每个上面的数据都是对数据库全量拷贝， 按照上一节中《搭建高可用mongodb集群（三）—— 深入副本集》搭建后还有两个问题没有解决：
从节点...
When and why I should use session_regenerate_id()?
...g some important inputs (changing passwords, credentials, forgot passwords etc.) which may compromise site security or privacy policy.
See also:
PHP Security Guide: Sessions
Session Fixation(Nice read)
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