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Table is marked as crashed and should be repaired
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Run this from your server's command line:
mysqlcheck --repair --all-databases
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SEH stack 结构探索（1）--- 从 SEH 链的最底层（线程第1个SEH结构）说起 -...
...TION_RECORD，即构造一个最底层的 SEH 结点
我们要看的是它如何构建 _EXCEPTION_REGISTRATION_RECORD 结构，我们最好准备纸笔记录下它的 stack 变化情况
1. ntdll32!_SEH_prolog4() 构造的 stack 结构
刚进入 ntdll32!_SEH_prolog4() 时的 stack 是下面的...
How do I initialize a TypeScript object with a JSON object
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TLDR: TypedJSON (working proof of concept)
The root of the complexity of this problem is that we need to deserialize JSON at runtime using type information that only exists at compile time. This requires that type-information is somehow made available at runtime.
Fortuna...
What are file descriptors, explained in simple terms?
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COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
sleep 14726 root cwd DIR 8,1 4096 1201140 /home/x
sleep 14726 root rtd DIR 8,1 4096 2 /
sleep 14726 root txt REG 8,1 35000 786587 /bin/sleep
sleep 14726 root mem REG 8,1 11864720 118650...
How do I modify a MySQL column to allow NULL?
MySQL 5.0.45
6 Answers
6
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Find running median from a stream of integers
...Add next item to one of the heaps
if next item is smaller than maxHeap root add it to maxHeap,
else add it to minHeap
Step 2: Balance the heaps (after this step heaps will be either balanced or
one of them will contain 1 more item)
if number of elements in one of the heaps is greater ...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...th on an Intel Core Duo, and while looking at various approaches to square root I've noticed something odd: using the SSE scalar operations, it is faster to take a reciprocal square root and multiply it to get the sqrt, than it is to use the native sqrt opcode!
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Build tree array from flat array in javascript
...que id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
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PHP: Convert any string to UTF-8 without knowing the original character set, or at least try
...a pure UTF-8 stack all the way through to your database. I have been using MySQL's utf8mb4 encoding for tables, fields, and connections.
My situation boiled down to "I just want my sanitizers, validators, business logic, and prepared statements to deal with UTF-8 when data comes from HTML forms, or...
How to check if field is null or empty in MySQL?
...uld like to check in PHP , then you should do something like :
$query_s =mysql_query("SELECT YOURROWNAME from `YOURTABLENAME` where name = $name");
$ertom=mysql_fetch_array($query_s);
if ('' !== $ertom['YOURROWNAME']) {
//do your action
echo "It was filled";
} else {
echo "it was empty!";
}...