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How can prepared statements protect from SQL injection attacks?
...ven alter it, as every SQL injection example shows it (all examples in PHP/Mysql):
$expected_data = 1;
$query = "SELECT * FROM users where id=$expected_data";
will produce a regular query
SELECT * FROM users where id=1
while this code
$spoiled_data = "1; DROP TABLE users;"
$query = "S...
Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
....shared, key, value, expire)
end
return status
最后一个问题：如何判断缓存是否生效了？试试下面的命令：
shell> curl -v "http://foo.com/test?x=123&y=abc"
< X-SRCache-Fetch-Status: HIT
< X-SRCache-Store-Status: BYPASS
目前我主要用srcache来缓存一些接口...
技术人员如何去面试？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
技术人员如何去面试？本文探讨的主要是如何选择公司、如何面试、如何谈薪水等实际的问题，可能描述会有偏颇，仅供参考。一、为什么跳槽和选择公司1.为什么跳槽虽...本文探讨的主要是如何选择公司、如何面试、如何谈薪...
What does Docker add to lxc-tools (the userspace LXC tools)?
...extremely fast, memory-cheap and disk-cheap.
This is provided by AUFS, a union filesystem that Docker depends on. You could set up AUFS yourself manually with LXC, but Docker uses it as a standard.
5) Logging: the standard streams (stdout/stderr/stdin) of each process container is collected an...
Is there any difference between GROUP BY and DISTINCT
... 12 there do appear to be cases where DISTINCT, getting distinct values by UNION, and GROUP BY work differently. I just had a case earlier today where DISTINCT and distinct by UNION cause an oracle error, but GROUP BY worked; I was selecting only 1 column from a view and not using any aggregation; I...
How to host a Node.Js application in shared hosting [closed]
... 30 minutes to set up the configuration, and it'll work with npm, Express, MySQL, etc.
See a2hosting.com.
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What is 'Pattern Matching' in functional languages?
...e functional languages allow you define simple data types called "disjoint unions" or "algebraic data types". These data structures are simple containers, and can be recursively defined. For example:
type 'a list =
| Nil
| Cons of 'a * 'a list
defines a stack-like data structure. Think of...
技术人员如何创业《四》- 打造超强执行力团队 - 资讯 - 清泛网 - 专注C/C++...
技术人员如何创业《四》- 打造超强执行力团队好的团队是创业公司成功的必要因素之一。差劲的团队会导致整个团队没有战斗力，互相算计，只看到自己的利益，永远做不成一个好的产品。优秀 好的团队是创业公司成功的必...
Windows下如何判断Win32 or x64？ - C/C++ - 清泛网 - 专注C/C++及内核技术
Windows下如何判断Win32 or x64？MSDN 里说，VC 有 3 个预处理常量，分别是 _WIN32，_WIN64，WIN32。这三个常量如何使用呢？看起来简单，其实是很困惑的。 在 Win3...MSDN 里说，VC 有 3 个预处理常量，分别是 _WIN32，_WIN64，WIN32。这三个...
How to use NULL or empty string in SQL
...ERE SomeCol = '' OR SomeCol IS NULL;
SELECT *
FROM #T
WHERE SomeCol = ''
UNION ALL
SELECT *
FROM #T
WHERE SomeCol IS NULL;
SELECT *
FROM #T
WHERE EXISTS ((SELECT NULL UNION SELECT '') INTERSECT SELECT SomeCol);
And some non-sargable ones...
SELECT *
FROM #T
WHERE IIF(SomeCol <> '',0,1) ...