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MySQL pagination without double-querying?
I was wondering if there was a way to get the number of results from a MySQL query, and at the same time limit the results.
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Why use sprintf function in PHP?
...example, forcing 2dp, 4-digit numbers, etc. It's quite useful for building MySQL query strings.
Another advantage is that it allows you to separate the layout of the string from the data being fed into it, almost like feeding in paramaters. For example, in the case of a MySQL query:
// For securit...
How can I return pivot table output in MySQL?
If I have a MySQL table looking something like this:
8 Answers
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...导致加载和执行缓慢，所以我们就来看看Lint这个工具是如何发现优化这些问题的（当然了，Lint实际的功能是非常强大的，我们开发中也是经常使用它来发现一些问题的，这里主要有点针对UI性能的说明了，其他的雷同）。
在And...
When to use single quotes, double quotes, and backticks in MySQL
...le and column identifiers, but are only necessary when the identifier is a MySQL reserved keyword, or when the identifier contains whitespace characters or characters beyond a limited set (see below) It is often recommended to avoid using reserved keywords as column or table identifiers when possibl...
What is the best place for storing uploaded images, SQL database or disk file system? [closed]
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I have recently created a PHP/MySQL app which stores PDFs/Word files in a MySQL table (as big as 40MB per file so far).
Pros:
Uploaded files are replicated to backup server along with everything else, no separate backup strategy is needed (peace of min...
How does this giant regex work?
...pecially FTP, although should be using sftp or ftps.
If you control your MySQL server make sure your web application's MySQL user account is not root, and make sure you remove MySQL FILE privileges from the account. You should also go a step further and do a chmod 500 -R /path/to/web/root and d...
Get record counts for all tables in MySQL database
Is there a way to get the count of rows in all tables in a MySQL database without running a SELECT count() on each table?
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PHP 错误记录和聚合的平台Sentry实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...和聚合的平台Sentry实战不管你用什么编程语言，都会面临如何处理错误日志的问题。很多程序员对错误日志放任自流，直到出现故障了才追悔莫及，如果问我怎么办，我会...不管你用什么编程语言，都会面临如何处理错误日志的...
ATL COM开发入门（一）（JS调用ActiveX/COM组件） - C/C++ - 清泛网 - 专注C/C++及内核技术
...它进行COM开发。本文通过一个基础入门的例子，简要介绍如何定义、实现C...ATL（Active Template Library）动态模板库，是一个类库，可以使用它进行COM开发。本文通过一个基础入门的例子，简要介绍如何定义、实现COM接口，前台如何...